Luster
Subadamantine
-
Pleochroism
-
Definite: brown reddish-brownWalter Schumann
Dispersion
0.060.01
0.005
1
👆🏻
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.855-1.8951.544-1.553
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
-
Birefringence
-99990.009
0
0.296
👆🏻
Clarity
Transparent
Transparent