Optical Properties
Luster
Not Available
Adamantine
Pleochroism
AbsentWalter Schumann
Weak
Dispersion
None
0.21
3
Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)
Transparent
Refractive Index
1.530-1.540
2.488-2.562
Optic Character
Not Available
Not Available
Crystal System
Not Available
tetragonal
Birefringence
0.004
0.073
Clarity
TranslucentWalter Schumann
Transparent
