1 Optical Properties
1.1 Luster
Not Available
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
1.4 Transparency
Handbook of mineralogy (2001)
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
1.5 Refractive Index
Not Available1.530-1.575
1
3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
1.8 Birefringence
Not AvailableNot Available
0
0.296
1.9 Clarity
Handbook of mineralogy (2001)
TranslucentHerve Nicolas Lazzarelli