Optical Properties
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Distinct: pale pink bluish-pinkHerve Nicolas Lazzarelli
colorless.
Dispersion
Not Available
0.01
28
Transparency
Transparent, Translucent, Transparent to translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.573-1.600
1.518-1.536
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
monoclinic
Birefringence
0.005-0.009
0.0050-0.0060
Clarity
Transparent to translucent
TransparentUlrich Henn and Claudio C. Milisenda
