Optical Properties
Luster
Vitreous
Vitreous
Pleochroism
AbsentWalter Schumann
Pale rose-red carmine-red colorlessAnthony et al
Dispersion
0.01
30
Not Available
Transparency
Transparent, Translucent, Transparent to translucent
Transparent
Refractive Index
1.432-1.436
1.692-1.739
Optic Character
Not Available
Not Available
Crystal System
cubic
Not Available
Birefringence
Not Available
0.240
Clarity
Transparent
Transparent
