1 Optical Properties
1.1 Luster
Vitreous
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
Weak: colorless -- very pale green -- very pale green
Not Available
1.3 Dispersion
1.4 Transparency
TranslucentAnthony et al, Handbook of mineralogy (2001)
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
1.5 Refractive Index
1.662-1.7231.530-1.575
1
3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
Not AvailableNot Available
0
0.296
1.9 Clarity
TranslucentAnthony et al
TranslucentHerve Nicolas Lazzarelli