Gemstone Type : Natural Tourmaline
Approx. Weight (ct) : 3.20 Ct.
Shape: Oval Cabochan
Size/Dimension (LxHxW) : 10 x 8 x 5 MM
Color : Green
Clarity : Transparent
Luster : Outstanding
Origin : Africa
Hardness : 7.5
Specific Gravity : 3.0+
Refractive Index : 1.62 - 1.68
Chemical Composition :
Na(Li,al)3al6si6o18(Bo3)3 (oh)4
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