Luster
Vitreous
Vitreous
Pleochroism
-
-
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Translucent, Opaque, Translucent to opaque
Refractive Index
1.780-1.8101.530-1.543
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Trigonal
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
Transparent to translucent
OpaqueHerve Nicolas Lazzarelli