Optical Properties
Luster
Resinous
Vitreous
Pleochroism
None
Colorless
Dispersion
Not Available
Not Available
Transparency
Not Available
Gemmological Tables (2004) More from other references
Refractive Index
1.653-1.688
1.638-1.650
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Hexagonal
Birefringence
Not Available
0.0130
Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda
