Luster
Vitreous
Vitreous
Pleochroism
-
-
Dispersion
0.010.03
0.005
1
👆🏻
Transparency
Translucent, Opaque, Translucent to opaque
Transparent, Translucent, Transparent to translucent
Refractive Index
1.530-1.5431.720-1.760
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
Isometric
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
OpaqueHerve Nicolas Lazzarelli
Transparent to translucent