Uvarovite

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.
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n. uvarovite (Mineralogy)

General Information:
 Chemical Formula:
Ca3Cr2(SiO4)3
 Composition:
(Molecular Weight = 500.48 gm)
Calcium 24.02 % Ca
Chromium 20.78 % Cr
Silicon 16.84 % Si
Oxygen 38.36 % O 
 Empirical Formula:
Ca3Cr2(SiO4)3
 Environment:
Metamorphosed chromite deposits.
 IMA Status:
Approved IMA 1963
 Locality:
Central Urals, Russia.
 Name Origin:
Named after Count S. S. Uvarov (1765-1855), Russian statesman and ardent amateur mineral collector.
Physical Properties:
 Cleavage:
None
 Color:
green.
 Density:
3.4 - 3.8, Average = 3.59
 Diaphaniety:
Transparent to translucent
 Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., Crystalline - Fine - Occurs as well-formed fine sized crystals., Lamellar - Thin laminae producing a lamellar structur e.
 Hardness:
6.5-7 - Pyrite-Quartz
 Luminescence:
None.
 Luster:
Vitreous (Glassy)
 Streak:
white
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