Luster
Pleochroism
Dispersion
Transparency
Refractive Index
Optic Character
Crystal System
Birefringence
Clarity
Weak or absentWalter Schumann
Transparent, Translucent, Transparent to translucent
Transparent to translucent
Waxy, Silky, Resinous, Greasy
TranslucentHerve Nicolas Lazzarelli
TranslucentHerve Nicolas Lazzarelli