Optical Properties
Luster
Vitreous
Greasy, Vitreous
Pleochroism
colorless.
None
Dispersion
0.70
2
0.03
15
Transparency
Transparent, Translucent, Transparent to translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.543-1.564
1.770-1.820
Optic Character
Biaxial/+
Not Available
Crystal System
Triclinic
cubic
Birefringence
0.007-0.011
Not Available
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
