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Tsavorite garnet

Tsavorite garnet cabochons
(tza-vo-rit'-gar-net')

20th c.; lat. granatum; geo. Tzavo river-National Park of Tsavo - Kenya

Most prized of the grossularite group of garnet, very vivid gemstone with the same coloring agents as emerald
Color
Light to dark intense green
Family
Aluminum and manganese silicate
Chemical composition
Ca3Al2(SiO4)3
Crystal system
Cubic
Hardness (Mohs scale)
7 - 7,5
Specific gravity
1,733 to 1,742
Refractive index
1,537 ±0,02
Birefringence
None
Optical character
Single refractive
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