Luster
Vitreous
Vitreous
Pleochroism
-
Present
Dispersion
0.030.02
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.
Refractive Index
1.720-1.7601.695
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Orthorhombic
Birefringence
-99990.006-0.018
0
0.296
👆🏻
Clarity
Transparent to translucent
OpaqueHerve Nicolas Lazzarelli