CHEMICAL CHARACTERISTICS
Ca3Cr3[SiO4]3
chromium and calcium silicate
PHYSICAL CHARACTERISTICS
Main color
green
emerald green
Color of streak
white
Luster
vitreous
Hardness
6.5 to 7.5
Density
3.77 to 0.00
Cleavage
indistinct
Fracture
conchoidal, uneven
OPTICAL PROPERTIES
Transparency
translucent, transparent
rarely transparent
Refractive index
1.870 - 0.000
Double refraction
0.000
none, isotropic, but sometimes rocks exhibit a polarization anomaly
visible double refraction
No
Dispersion
0.027(0.014)
Pleochroism
absent
Number of colors
1
isotropic
uvarovite spectrum system
Fluorescence
none
CRYSTALS PROPERTIES
very small but well shaped hexoctahedra, dodecahedra
crystals system
cubic
OTHER INFORMATIONS
Astrological sign
Sagittarius, Virgo
APPROACHING GEMS
Exploited
sites
It is found in France (Pyrenees), Russia (Urals), Canada, United States (California), Madagascar, Finland, India (Himalayas), Poland.
use in jewelry
limited because little transparent, it’s a collection stone
imitations and
treatments
Imitated by green garnet / glass doublets in a rather misleading way
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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