Optical Properties
Luster
Vitreous
Adamantine
Pleochroism
AbsentWalter Schumann
Not Available
Dispersion
0.01
29
Not Available
Transparency
Transparent, Translucent
Transparent, Opaque, Transparent to opaque
Refractive Index
1.450-1.550
1.888-1.889
Optic Character
Not Available
Not Available
Crystal System
Amorphous
Isometric
Birefringence
Not Available
Not Available
Clarity
Transparent
Transparent to opaque
