Luster
Vitreous, Pearly
Vitreous
Pleochroism
-
In thick sections
Dispersion
0.030.03
0.005
1
👆🏻
Transparency
TransparentMichael OâDonoghue
Transparent
Refractive Index
1.56-1.601.690-1.705
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
-
Birefringence
0.010-0.020-9999
0
0.296
👆🏻
Clarity
TransparentMichael OâDonoghue
Transparent