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uvarovite

 
Dictionary: u·va·rov·ite
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(yū-vär'ə-vīt', ū-) pronunciation
n.
An emerald-green variety of garnet, Ca3Cr2(SiO4)3, found in chromium deposits.

[After Count Sergei Semenovitch Uvarov (1785-1855), president of the St. Petersburg Academy.]


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Wordsmith Words: uvarovite
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(oo-VAR-uh-vyt, yoo-)

noun
An emerald-green mineral, a variety of garnet.

Etymology
After Count Sergei Semenovich Uvarov (1785-1855), president of the St. Petersburg Academy.

Usage
What used to be only mineral specimens ... are now being fashioned into drop earrings and pendants. Gemmy chrysocolla (greenish blue), uvarovite (dark green) ... were the most popular among the natural-color gems." — Gary Roskin, Chinese Pearls a Hit in Tucson, Jewelers Circular Keystone, Apr 1999.

Wikipedia: Uvarovite
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Uvarovite

Pendant in uvarovite, a rare bright-green garnet. The long dimension is 2 cm (0.8 inch)
General
Category Mineral
Chemical formula Ca3Cr2Si3O12
Identification
Color Green, emerald-green, green-black
Mohs Scale hardness 7.5
Luster Vitreous
Streak White
Diaphaneity Transparent, Translucent

Uvarovite is a chromium bearing garnet group species with the formula: Ca3Cr2(SiO4)3. It was discovered in 1832 by Germain Henri Hess who named it after Count Sergei Semenovitch Uvarov (1765-1855), a Russian statesman and amateur mineral collector.

Uvarovite is one of the rarer of the garnet group minerals, and is the only consistently green garnet species, with a beautiful emerald-green color. It occurs as well-formed fine sized crystals. Specimens of uvarovite are much sought after by collectors for outstanding brilliance and color.

It is found associated with chromium ores in Spain, Russia, and Quebec in Canada. It also occurs in Finland, Norway, and South Africa.

Uvarovite

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References

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Garnet (mineralogy and petrology)
andradite
chromite

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Wordsmith Words. © 2009 Wordsmith.org. All rights reserved.  Read more
Rock & Mineral Guide. Peterson Field Guide to Rocks and Minerals, by Frederick H. Pough. Copyright © 1998 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Uvarovite".  Read more