Luster
Pleochroism
Dispersion
Transparency
Refractive Index
Optic Character
Crystal System
Birefringence
Clarity
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
TransparentUlrich Henn and Claudio C. Milisenda
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d