Luster
-
Waxy, Silky, Resinous, Greasy
Pleochroism
-
-
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
TranslucentWalter Schumann
TranslucentHerve Nicolas Lazzarelli
Refractive Index
1.530-1.5401.530-1.575
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
-
Birefringence
0.004-9999
0
0.296
👆🏻
Clarity
TranslucentWalter Schumann
TranslucentHerve Nicolas Lazzarelli