https://cunnan.lochac.sca.org/index.php?title=Quartz&feed=atom&action=historyQuartz - Revision history2024-03-28T21:25:07ZRevision history for this page on the wikiMediaWiki 1.39.3https://cunnan.lochac.sca.org/index.php?title=Quartz&diff=40301&oldid=prevCian at 02:20, 24 February 20102010-02-24T02:20:03Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:20, 24 February 2010</td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a <del style="font-weight: bold; text-decoration: none;">crystalline</del> form of ''silica'' (SiO<sub>2</sub>) and is one of the most common <del style="font-weight: bold; text-decoration: none;">gemstones</del> in the world. The name itself comes from the Old English word for "cross-vein stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient <del style="font-weight: bold; text-decoration: none;">Europeans</del> believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a <ins style="font-weight: bold; text-decoration: none;">[[crystal]]line</ins> form of ''silica'' (SiO<sub>2</sub>) and is one of the most common <ins style="font-weight: bold; text-decoration: none;">[[gemstone]]s</ins> in the world. The name itself comes from the <ins style="font-weight: bold; text-decoration: none;">[[</ins>Old English<ins style="font-weight: bold; text-decoration: none;">]]</ins> word for "cross-vein stone". However, some authorities believe it derives from the <ins style="font-weight: bold; text-decoration: none;">[[</ins>Slavic<ins style="font-weight: bold; text-decoration: none;">]]</ins> word for "hard". The <ins style="font-weight: bold; text-decoration: none;">[[</ins>ancient<ins style="font-weight: bold; text-decoration: none;">]]</ins> <ins style="font-weight: bold; text-decoration: none;">[[Europe]]ans</ins> believed quartz to be a petrified form of water; hence the name ''crystalus'', from the <ins style="font-weight: bold; text-decoration: none;">[[</ins>Greek<ins style="font-weight: bold; text-decoration: none;">]]</ins> word for "ice".</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in Pliny's time. Even so, he noted that that a rock crystal bowl sold for 150,000 ''sestertii'' (about $6000 US). He also expressed some surprise that the introduction of [[glass]] did not adversely affect the price of crystal. Today, fine glassware is still referred to as "crystal".</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in <ins style="font-weight: bold; text-decoration: none;">[[</ins>Pliny<ins style="font-weight: bold; text-decoration: none;">]]</ins>'s time. Even so, he noted that that a rock crystal bowl sold for 150,000 ''<ins style="font-weight: bold; text-decoration: none;">[[</ins>sestertii<ins style="font-weight: bold; text-decoration: none;">]]</ins>'' (about $6000 US). He also expressed some surprise that the introduction of [[glass]] did not adversely affect the price of crystal. Today, fine glassware is still referred to as "crystal".</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz comprises an entire family of gemstones, which are classified according to color:</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz comprises an entire family of gemstones, which are classified according to color:</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*rock crystal (clear quartz)</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*rock crystal (clear quartz)</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*smoky quartz (also known as ''morion'' & ''caingorm''; formerly sold under the trade name "smoky topaz")</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*smoky quartz (also known as ''morion'' & ''caingorm''; formerly sold under the trade name "smoky topaz")</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*[[amethyst]] (purple quartz; also ''amethyst quartz'', which is purple with translucent bands of white quartz)</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*[[amethyst]] (purple quartz; also ''amethyst quartz'', which is <ins style="font-weight: bold; text-decoration: none;">[[</ins>purple<ins style="font-weight: bold; text-decoration: none;">]]</ins> with translucent bands of white quartz)</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*[[citrine]] (<del style="font-weight: bold; text-decoration: none;">golden</del> yellow to scarlet red quartz; when occuring in the same stone as amethyst, it is known as ''ametrine'')</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*[[citrine]] (<ins style="font-weight: bold; text-decoration: none;">[[gold]]en</ins> <ins style="font-weight: bold; text-decoration: none;">[[</ins>yellow<ins style="font-weight: bold; text-decoration: none;">]]</ins> to scarlet <ins style="font-weight: bold; text-decoration: none;">[[</ins>red<ins style="font-weight: bold; text-decoration: none;">]]</ins> quartz; when occuring in the same stone as amethyst, it is known as ''ametrine'')</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*rose quartz (translucent quartz that is pale to rose pink in color)</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*<ins style="font-weight: bold; text-decoration: none;">[[</ins>rose<ins style="font-weight: bold; text-decoration: none;">]]</ins> quartz (translucent quartz that is pale to rose <ins style="font-weight: bold; text-decoration: none;">[[</ins>pink<ins style="font-weight: bold; text-decoration: none;">]]</ins> in color)</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>There are also man-made varieties of quartz, such as ''prasiolite'', which is pale green, and ''blue crystal'', a vivid cobalt blue in color.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>There are also man-made varieties of quartz, such as ''prasiolite'', which is pale <ins style="font-weight: bold; text-decoration: none;">[[</ins>green<ins style="font-weight: bold; text-decoration: none;">]]</ins>, and ''<ins style="font-weight: bold; text-decoration: none;">[[</ins>blue<ins style="font-weight: bold; text-decoration: none;">]]</ins> crystal'', a vivid cobalt blue in <ins style="font-weight: bold; text-decoration: none;">[[</ins>color<ins style="font-weight: bold; text-decoration: none;">]]</ins>.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Quartzite Families ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Quartzite Families ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in [[medieval]] times, at least as separate minerals. They were often classed with other gemstones of similar appearance.</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in [[medieval]] times, at least as separate minerals. They were often classed with other gemstones of similar appearance.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times, but was probably available and most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times, but was probably available and most likely classed as green ''jasper''; the <ins style="font-weight: bold; text-decoration: none;">[[China|</ins>Chinese<ins style="font-weight: bold; text-decoration: none;">]]</ins> sometimes used it as a substitute for ''jade'')</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*blue quartz (unlike blue crystal above, blue quartz is a natural stone but rather turbid; it takes its color from inclusions of crocidolite or rutile; the color ranges from gray to sky blue and gem quality material is hard to obtain)</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*blue quartz (unlike blue crystal above, blue quartz is a natural stone but rather turbid; it takes its color from inclusions of crocidolite or rutile; the color ranges from gray to sky blue and gem quality material is hard to obtain)</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*dumortierite quartz (medium to dark blue in color; it is often mistaken for [[lapis lazuli]])</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*dumortierite quartz (medium to dark blue in color; it is often mistaken for [[lapis lazuli]])</div></td>
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</table>Cianhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30848&oldid=prevLd Hærek at 21:17, 22 December 20062006-12-22T21:17:25Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 08:17, 23 December 2006</td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a crystalline form of ''silica'' (SiO<sub>2</sub>) and is one of the most common gemstones in the world. The name itself comes from the Old English word for "<del style="font-weight: bold; text-decoration: none;">right</del>-<del style="font-weight: bold; text-decoration: none;">angle</del> stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient Europeans believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a crystalline form of ''silica'' (SiO<sub>2</sub>) and is one of the most common gemstones in the world. The name itself comes from the Old English word for "<ins style="font-weight: bold; text-decoration: none;">cross</ins>-<ins style="font-weight: bold; text-decoration: none;">vein</ins> stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient Europeans believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in Pliny's time. Even so, he noted that that a rock crystal bowl sold for 150,000 ''sestertii'' (about $6000 US). He also expressed some surprise that the introduction of [[glass]] did not adversely affect the price of crystal. Today, fine glassware is still referred to as "crystal".</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in Pliny's time. Even so, he noted that that a rock crystal bowl sold for 150,000 ''sestertii'' (about $6000 US). He also expressed some surprise that the introduction of [[glass]] did not adversely affect the price of crystal. Today, fine glassware is still referred to as "crystal".</div></td>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30704&oldid=prevLd Hærek at 05:36, 4 December 20062006-12-04T05:36:16Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:36, 4 December 2006</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>There are also man-made varieties of quartz, such as ''prasiolite'', which is pale green, and ''blue crystal'', a vivid cobalt blue in color.</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>There are also man-made varieties of quartz, such as ''prasiolite'', which is pale green, and ''blue crystal'', a vivid cobalt blue in color.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== <del style="font-weight: bold; text-decoration: none;">Quartz</del> Families ==</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== <ins style="font-weight: bold; text-decoration: none;">Quartzite</ins> Families ==</div></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in [[medieval]] times, at least as separate minerals. They were often classed with other gemstones of similar appearance.</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in [[medieval]] times, at least as separate minerals. They were often classed with other gemstones of similar appearance.</div></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times, but was probably available and most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times, but was probably available and most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30603&oldid=prevLd Hærek at 03:49, 28 November 20062006-11-28T03:49:26Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a crystalline form of ''silica'' (SiO<sub>2</sub>) and is one of the most common gemstones in the world. The name itself comes from the Old English word for "right-angle stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient Europeans believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a crystalline form of ''silica'' (SiO<sub>2</sub>) and is one of the most common gemstones in the world. The name itself comes from the Old English word for "right-angle stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient Europeans believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in Pliny's time. <del style="font-weight: bold; text-decoration: none;">Never</del> <del style="font-weight: bold; text-decoration: none;">the less</del> he <del style="font-weight: bold; text-decoration: none;">was</del> <del style="font-weight: bold; text-decoration: none;">concerned</del> <del style="font-weight: bold; text-decoration: none;">enough</del> about the introduction of [[glass]] <del style="font-weight: bold; text-decoration: none;">to</del> <del style="font-weight: bold; text-decoration: none;">complain</del> <del style="font-weight: bold; text-decoration: none;">about</del> <del style="font-weight: bold; text-decoration: none;">it possibly depressing</del> the price of <del style="font-weight: bold; text-decoration: none;">good</del> crystal.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in Pliny's time. <ins style="font-weight: bold; text-decoration: none;">Even</ins> <ins style="font-weight: bold; text-decoration: none;">so,</ins> he <ins style="font-weight: bold; text-decoration: none;">noted</ins> <ins style="font-weight: bold; text-decoration: none;">that</ins> <ins style="font-weight: bold; text-decoration: none;">that</ins> <ins style="font-weight: bold; text-decoration: none;">a rock crystal bowl sold for 150,000 ''sestertii'' (</ins>about<ins style="font-weight: bold; text-decoration: none;"> $6000 US). He also expressed some surprise that</ins> the introduction of [[glass]] <ins style="font-weight: bold; text-decoration: none;">did</ins> <ins style="font-weight: bold; text-decoration: none;">not</ins> <ins style="font-weight: bold; text-decoration: none;">adversely</ins> <ins style="font-weight: bold; text-decoration: none;">affect</ins> the price of <ins style="font-weight: bold; text-decoration: none;">crystal. Today, fine glassware is still referred to as</ins> <ins style="font-weight: bold; text-decoration: none;">"</ins>crystal<ins style="font-weight: bold; text-decoration: none;">"</ins>.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz comprises an entire family of gemstones, which are classified according to color:</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz comprises an entire family of gemstones, which are classified according to color:</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td>
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<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*C. Plinius Secundus, 37th Book of ''The Natural History of the World'', trans. by Philomen Holland, 1601.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*Walter Schumann, ''Gemstones of the World,'' New York, 1997</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*Walter Schumann, ''Gemstones of the World,'' New York, 1997</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*June Culp Zeitner, ''Gem & Lapidary Materials'', Geoscience Press, Inc. 1996</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*June Culp Zeitner, ''Gem & Lapidary Materials'', Geoscience Press, Inc. 1996</div></td>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30539&oldid=prevLd Hærek at 19:37, 25 November 20062006-11-25T19:37:08Z<p></p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Durability ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Durability ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz is a fairly hard mineral, ranking 7 on the Mohs scale. This is an important property for reenactors to note. Because silica is commonly found in ordinary dust, any gemstone softer than quartz will eventually lose its polish. Extra care should be given to softer stones, such lapis lazuli, in order to prevent scratching. In addition, quartz is very durable, having no cleavage planes. This makes it suitable for all types of jewellry. Microcrystalline quartz (agate, chalcedony, etc) is somewhat softer (6½ to 7 on the Mohs scale), but is still very durable and will hold a polish for a long time.</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz is a fairly hard mineral, ranking 7 on the Mohs scale. This is an important property for reenactors to note. Because silica is commonly found in ordinary dust, any gemstone softer than quartz will eventually lose its polish. Extra care should be given to softer stones, such lapis lazuli, in order to prevent scratching. In addition, quartz is very durable, having no cleavage planes. This makes it suitable for all types of jewellry. Microcrystalline quartz (agate, chalcedony, etc) is somewhat softer (6½ to 7 on the Mohs scale), but is still very durable and will hold a polish for a long time.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*Walter Schumann, ''Gemstones of the World,'' New York, 1997</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*June Culp Zeitner, ''Gem & Lapidary Materials'', Geoscience Press, Inc. 1996</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:gemstones]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:gemstones]]</div></td>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30533&oldid=prevLd Hærek at 23:34, 23 November 20062006-11-23T23:34:43Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Quartz Families ==</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Quartz Families ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in [[medieval]] times, at least as separate minerals. They were often classed with other gemstones of similar appearance.</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in [[medieval]] times, at least as separate minerals. They were often classed with other gemstones of similar appearance.</div></td>
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<tr>
<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times but was most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times<ins style="font-weight: bold; text-decoration: none;">,</ins> but was<ins style="font-weight: bold; text-decoration: none;"> probably available and</ins> most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*blue quartz (unlike blue crystal above, blue quartz is a natural stone but rather turbid; it takes its color from inclusions of crocidolite or rutile; the color ranges from gray to sky blue and gem quality material is hard to obtain)</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*blue quartz (unlike blue crystal above, blue quartz is a natural stone but rather turbid; it takes its color from inclusions of crocidolite or rutile; the color ranges from gray to sky blue and gem quality material is hard to obtain)</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*dumortierite quartz (medium to dark blue in color; it is often mistaken for [[lapis lazuli]])</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*dumortierite quartz (medium to dark blue in color; it is often mistaken for [[lapis lazuli]])</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*jasper (in ancient times a catch-all term for gemstones otherwise unclassified; by medieval times the term was more or less restricted to spotted green stones; today ''jasper'' refers to a variety of microcrystalline quartz that is opaque rather than translucent, and displaying more earth-like colors than either ''agate'' or ''chalcedony'')</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*jasper (in ancient times a catch-all term for gemstones otherwise unclassified; by medieval times the term was more or less restricted to spotted green stones; today ''jasper'' refers to a variety of microcrystalline quartz that is opaque rather than translucent, and displaying more earth-like colors than either ''agate'' or ''chalcedony'')</div></td>
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<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*[[opal]] (technically opal is neither a variety of quartz, nor is it even a crystal; rather it is a silicate suspension in a hydrous gel (SiO<sub>2</sub>•nH<sub>2</sub>O)</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*[[opal]] (technically opal is neither a variety of quartz, nor is it even a crystal; rather it is a silicate suspension in a hydrous gel (SiO<sub>2</sub>•nH<sub>2</sub>O)</div></td>
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<tr>
<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== Durability ==</div></td>
</tr>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Quartz is a fairly hard mineral, ranking 7 on the Mohs scale. This is an important property for reenactors to note. Because silica is commonly found in ordinary dust, any gemstone softer than quartz will eventually lose its polish. Extra care should be given to softer stones, such lapis lazuli, in order to prevent scratching. In addition, quartz is very durable, having no cleavage planes. This makes it suitable for all types of jewellry. Microcrystalline quartz (agate, chalcedony, etc) is somewhat softer (6½ to 7 on the Mohs scale), but is still very durable and will hold a polish for a long time.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:gemstones]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:gemstones]]</div></td>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30531&oldid=prevLd Hærek at 23:10, 22 November 20062006-11-22T23:10:35Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:10, 23 November 2006</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*blue quartz (unlike blue crystal above, blue quartz is a natural stone but rather turbid; it takes its color from inclusions of crocidolite or rutile; the color ranges from gray to sky blue and gem quality material is hard to obtain)</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*blue quartz (unlike blue crystal above, blue quartz is a natural stone but rather turbid; it takes its color from inclusions of crocidolite or rutile; the color ranges from gray to sky blue and gem quality material is hard to obtain)</div></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*dumortierite quartz (medium to dark blue in color; it is often mistaken for [[lapis lazuli]])</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*dumortierite quartz (medium to dark blue in color; it is often mistaken for [[lapis lazuli]])</div></td>
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<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*tiger's-eye (golden brown<del style="font-weight: bold; text-decoration: none;">,</del> inclusions of asbestos needles give it a ''chatoyancy'' almost like that of a holograph; apparently unknown in medieval times, it may have been the source of [[Pliny]]'s "hyena stone")</div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*tiger's-eye (golden brown<ins style="font-weight: bold; text-decoration: none;">;</ins> inclusions of asbestos needles give it<ins style="font-weight: bold; text-decoration: none;"> a silken luster and</ins> a ''chatoyancy'' almost like that of a holograph; apparently unknown in medieval times, it may have been the source of [[Pliny]]'s "hyena stone")</div></td>
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<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><br /></td>
</tr>
<tr>
<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== Microcrystalline Quartz ==</div></td>
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<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>There are several families of quartz, whose crystal structure is too small to be seen with the naked eye. These types all have a waxy luster and are translucent rather than transparent.</div></td>
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<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*[[agate]] (characterised by alternating wavy bands of color; onyx is a type of ''agate'')</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*chalcedony (a variety of agate displaying solid uniform color)</div></td>
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<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*jasper (in ancient times a catch-all term for gemstones otherwise unclassified; by medieval times the term was more or less restricted to spotted green stones; today ''jasper'' refers to a variety of microcrystalline quartz that is opaque rather than translucent, and displaying more earth-like colors than either ''agate'' or ''chalcedony'')</div></td>
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<tr>
<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*[[opal]] (technically opal is neither a variety of quartz, nor is it even a crystal; rather it is a silicate suspension in a hydrous gel (SiO<sub>2</sub>•nH<sub>2</sub>O)</div></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:gemstones]]</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:gemstones]]</div></td>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30476&oldid=prevLd Hærek at 04:17, 20 November 20062006-11-20T04:17:27Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:17, 20 November 2006</td>
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<td colspan="2" class="diff-lineno">Line 1:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a crystalline form of ''silica'' (SiO<sub>2</sub>) and is one of the most common gemstones in the world. The name itself comes from the Old English word for "right-angle stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient Europeans believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Quartz''' is a crystalline form of ''silica'' (SiO<sub>2</sub>) and is one of the most common gemstones in the world. The name itself comes from the Old English word for "right-angle stone". However, some authorities believe it derives from the Slavic word for "hard". The ancient Europeans believed quartz to be a petrified form of water; hence the name ''crystalus'', from the Greek word for "ice".</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><br /></td>
</tr>
<tr>
<td colspan="2" class="diff-empty diff-side-deleted"></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Quartz was a common [[gemstone]] even in Pliny's time. Never the less he was concerned enough about the introduction of [[glass]] to complain about it possibly depressing the price of good crystal.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
</tr>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz comprises an entire family of gemstones, which are classified according to color:</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Quartz comprises an entire family of gemstones, which are classified according to color:</div></td>
</tr>
</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30474&oldid=prevLd Hærek at 04:11, 20 November 20062006-11-20T04:11:39Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:11, 20 November 2006</td>
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<td colspan="2" class="diff-lineno">Line 4:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*rock crystal (clear quartz)</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*rock crystal (clear quartz)</div></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*smoky quartz (also known as ''morion'' & ''caingorm''; formerly sold under the trade name "smoky topaz")</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*smoky quartz (also known as ''morion'' & ''caingorm''; formerly sold under the trade name "smoky topaz")</div></td>
</tr>
<tr>
<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*amethyst (purple quartz; also ''amethyst quartz'', which is purple with translucent bands of white quartz)</div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*<ins style="font-weight: bold; text-decoration: none;">[[</ins>amethyst<ins style="font-weight: bold; text-decoration: none;">]]</ins> (purple quartz; also ''amethyst quartz'', which is purple with translucent bands of white quartz)</div></td>
</tr>
<tr>
<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>*citrine (golden yellow to scarlet red quartz; when occuring in the same stone as amethyst, it is known as ''ametrine'')</div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>*<ins style="font-weight: bold; text-decoration: none;">[[</ins>citrine<ins style="font-weight: bold; text-decoration: none;">]]</ins> (golden yellow to scarlet red quartz; when occuring in the same stone as amethyst, it is known as ''ametrine'')</div></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*rose quartz (translucent quartz that is pale to rose pink in color)</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*rose quartz (translucent quartz that is pale to rose pink in color)</div></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td colspan="2" class="diff-lineno">Line 11:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Quartz Families ==</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Quartz Families ==</div></td>
</tr>
<tr>
<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in medieval times, at least as separate minerals. They <del style="font-weight: bold; text-decoration: none;">we</del></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in <ins style="font-weight: bold; text-decoration: none;">[[</ins>medieval<ins style="font-weight: bold; text-decoration: none;">]]</ins> times, at least as separate minerals. They <ins style="font-weight: bold; text-decoration: none;">were often classed with other gemstones of similar appearance.</ins></div></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times but was most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>*aventurine (a pale to vivid green variety of quartz, heavily included with mica; it was unknown in medieval times but was most likely classed as green ''jasper''; the Chinese sometimes used it as a substitute for ''jade'')</div></td>
</tr>
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</table>Ld Hærekhttps://cunnan.lochac.sca.org/index.php?title=Quartz&diff=30473&oldid=prevLd Hærek at 03:49, 20 November 20062006-11-20T03:49:08Z<p></p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>There are also man-made varieties of quartz, such as ''prasiolite'', which is pale green, and ''blue crystal'', a vivid cobalt blue in color.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>There are also man-made varieties of quartz, such as ''prasiolite'', which is pale green, and ''blue crystal'', a vivid cobalt blue in color.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Most of the quartz varieties listed above are transparent. There are also several translucent or opaque varieties that make good gemstones. Most of these were unknown in medieval times, at least as separate minerals. They we</div></td>
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</table>Ld Hærek