1 Optical Properties
1.1 Luster
Not Available
Vitreous, Adamantine, Vitreous, Adamantine
1.2 Pleochroism
1.3 Dispersion
1.4 Transparency
Not Available
Transparent, Transparent to translucent
1.5 Refractive Index
Not Available1.730-1.895
1
3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
face-centered cubic (fcc)
Trigonal
1.8 Birefringence
Not AvailableNot Available
0
0.296
1.9 Clarity
Not Available
Transparent