Luster
Waxy, Vitreous, Greasy, Silky
Vitreous
Pleochroism
-
Weak: pink pale pinkHerve Nicolas Lazzarelli
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.530-1.5431.544-1.553
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
Hexagonal
Birefringence
0.003-0.0090.009
0
0.296
👆🏻
Clarity
Translucent
TranslucentHerve Nicolas Lazzarelli