Luster
Vitreous
-
Pleochroism
Pale rose-red carmine-red colorlessAnthony et al
-
Dispersion
0.040.01
0.005
1
👆🏻
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.692-1.7391.48-1.70
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
-
Birefringence
0.240-9999
0
0.296
👆🏻
Clarity
Transparent
Transparent