Optical Properties
Luster
Not Available
Vitreous, Greasy
Pleochroism
AbsentWalter Schumann
Weak
Dispersion
None
Not Available
Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)
Not Available
Refractive Index
1.530-1.540
1.672-1.676
Optic Character
Not Available
Not Available
Crystal System
Not Available
Orthorhombic
Birefringence
0.004
0.019-0.021
Clarity
TranslucentWalter Schumann
Not Available
