Luster
Subadamantine, Resinous
Waxy, Silky, Resinous, Greasy
Transparency
TransparentRobert C. Kammerling
TranslucentHerve Nicolas Lazzarelli
Refractive Index
2.013-2.029
1.530-1.575
Crystal System
Hexagonal
-
Birefringence
0.016
-9999
Clarity
TransparentRobert C. Kammerling
TranslucentHerve Nicolas Lazzarelli