Optical Properties
Luster
Pearly, Vitreous
Vitreous
Pleochroism
Distinct
Not Available
Dispersion
Not Available
Not Available
Transparency
Not Available
Gemmological Tables (2004) More from other references
Refractive Index
1.565-1.625
1.790-1.818
Optic Character
Not Available
Not Available
Crystal System
monoclinic
cubic
Birefringence
0.040-0.050
Not Available
Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda
