2 Optical Properties
2.2 Luster
2.3 Pleochroism
Not Available
Not Available
2.5 Dispersion
2.7 Transparency
Gemmological Tables (2004)
Transparent, Translucent, Transparent to translucent
2.8 Refractive Index
1.540-1.5601.52-1.56
1
3.25
1.6 Optic Character
Not Available
Not Available
1.9 Crystal System
Not Available
Orthorhombic
1.10 Birefringence
Not AvailableNot Available
0
0.296
2.8 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Transparent to translucent