Luster
Pleochroism
Dispersion
Transparency
Refractive Index
Optic Character
Crystal System
Birefringence
Clarity
O = brownish red; E = yellowish red
OpaqueHerve Nicolas Lazzarelli
OpaqueHerve Nicolas Lazzarelli
Transparent, Translucent, Transparent to translucent
Transparent to translucent