Luster
Vitreous
Vitreous
Pleochroism
-
None
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.432-1.4361.544-1.553
1
3.25
👆🏻
Optic Character
-
-
Crystal System
cubic
Trigonal
Birefringence
-99990.009
0
0.296
👆🏻
Clarity
Transparent
Opaque