Tsavorite garnet
(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
Hardness (Mohs scale)
7 - 7,5
Specific gravity
1,733 to 1,742
Refractive index
1,537 ±0,02
Optical character
Single refractive