1 Optical Properties
1.1 Luster
Vitreous, Silky, Greasy, Fibrous
Vitreous
1.2 Pleochroism
Not Available
Weak: pink pale pinkHerve Nicolas Lazzarelli
1.3 Dispersion
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.672-1.7081.544-1.553
1
3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
1.8 Birefringence
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TranslucentHerve Nicolas Lazzarelli