1 Optical Properties
1.1 Luster
Vitreous
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
Weak: pink pale pinkHerve Nicolas Lazzarelli
Not Available
1.3 Dispersion
1.4 Transparency
Transparent, Translucent, Transparent to translucent
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
1.5 Refractive Index
1.544-1.5531.530-1.575
1
3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
1.8 Birefringence
0.009Not Available
0
0.296
1.9 Clarity
TranslucentHerve Nicolas Lazzarelli
TranslucentHerve Nicolas Lazzarelli