Luster
Vitreous
-
Pleochroism
Very weak: light green pale greenWalter Schumann
-
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.544-1.553-9999
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
Hexagonal
Birefringence
0.009-9999
0
0.296
👆🏻
Clarity
Transparent
-