Difference between revisions of "Emerald"

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The '''emerald''' is a variety of the mineral [[beryl]], colored green by trace amounts of chromium and sometimes iron.  It is highly prized as a [[gemstone]] and ounce for ounce is the most valuable gemstone in the world, often made more so by inclusions.
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The '''emerald''' is a variety of the mineral [[beryl]], colored [[green]] by trace amounts of chromium and sometimes [[iron]].  It is highly prized as a [[gemstones|gemstone]] and ounce for ounce is the most valuable [[gemstone]] in the world, often made more so by inclusions.
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In [[ancient]] times and throughout the early [[Middle Ages]], the term emerald could mean any green gemstone. [[Pliny the Elder]] mentions 12 varieties of emerald; among them are:
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*malachite (the original "true" emerald)
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*chrysoprase (a type of ''chalcedony'', the color ranges from pale to apple green)
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*jasper (the term ''iaspis'' originally referred to several spotted green stones, which may have included serpentine and nephrite ''jade'')
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''See also:''
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*[[Emerald (maplet)|Emerald according to Maplet's ''A Greene Forest'']]
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== References: ==
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*[http://www.pbm.com/~lindahl/cariadoc/gemstones.html Cariadoc's ''"On gemstones"'']
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*Walter Schumann, ''Gemstones of the World'', New York, (rev) 1997
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[[category:gemstones]]

Latest revision as of 15:31, 5 May 2006