Uvarovite

Uvarovite is one of the rarest 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. It was discovered in 1832 by Germain Henri Hess who named it after Count S.S. Uvarov (1765-1855), a Russian statesman and amateur mineral collector.

Uvarovite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 

Uvarovite Gemstones by Size

This table shows distribution of Uvarovite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.44 cts
Heaviest:.47 cts
Average:0.45 cts
Total photos:2
Do you have a larger Uvarovite? Why not upload a photo?
0.44ct to 0.44ct0.44ct to 0.45ct0.45ct to 0.45ct0.45ct to 0.45ct0.45ct to 0.46ct0.46ct to 0.46ct0.46ct to 0.46ct0.46ct to 0.46ct0.46ct to 0.47ct0.47ct to 0.47ct
General Information
A variety or type of:Garnet Group
Chemical Formula
Ca
 
3
Cr
 
2
(SiO
 
4
)
 
3
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Photos of natural/un-cut material from mindat.org
Physical Properties of Uvarovite
Mohs Hardness7.5 to 0
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Specific Gravity3.77
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Cleavage QualityNone
Arthur Thomas, Gemstones (2009)
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Uvarovite
Refractive Index1.87
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Optical CharacterIsotropic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Dispersion0.014 to 0.021
Walter Schumann, Gemstones of the world (2001)
Colour
Colour (General)Green
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Colour (Chelsea Filter)Inert to reddish
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Causes of ColourBright green due to chromium
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
TransparencyTranslucent,Opaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
LustreVitreous
Arthur Thomas, Gemstones (2009)
Fluorescence & other light emissions
Fluorescence (General)Inert
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Crystallography of Uvarovite
Crystal SystemIsometric
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
HabitTrapezohedral, dodecahedral
Arthur Thomas, Gemstones (2009)
Geological Environment
Where found:Uvarovite is formed from the metamorphism of impure siliceous limestones and some other rocks that contain chromium.
Arthur Thomas, Gemstones (2009)
Further Information
Mineral information:Uvarovite information at mindat.org
Significant Gem Localities
China
 
  • Tibet
    • Nyingtri Prefecture (Linzhi Prefecture)
      • Bomi Co.
        • Yigong
He et al. (2000)
Russia
 
  • Permskaya Oblast
    • Gornozavodskii area
      • Saranovskaya Village (Sarany)
Burlakov and Avdonin (2006)
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