Luster
Adamantine
Pearly
Pleochroism
Distinctly trichroic
-
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent
Transparent, Transparent to translucent
Refractive Index
2.31-2.661.518-1.527
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
monoclinic
Birefringence
-99990.006-0.007
0
0.296
👆🏻
Clarity
Transparent
Transparent