1 Optical Properties
1.1 Luster
Adamantine
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
1.3 Dispersion
1.4 Transparency
TranslucentWalter Schumann
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
1.5 Refractive Index
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
1.8 Birefringence
Not AvailableNot Available
0
0.296
1.9 Clarity
TranslucentWalter Schumann
TranslucentHerve Nicolas Lazzarelli