Luster
Vitreous
Vitreous
Pleochroism
Visible in colored crystals
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.49031.650-1.695
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Trigonal
Birefringence
-99990.016
0
0.296
👆🏻
Clarity
-
TransparentUlrich Henn and Claudio C. Milisenda