Optical Properties
Luster
Adamantine
Waxy
Pleochroism
Weakly pleochroic with O reddish and E greenish in thick sections.
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Gemmological Tables (2004) More from other references
Translucent
Refractive Index
2.117-2.145
1.535-1.539
Optic Character
Not Available
Not Available
Crystal System
tetragonal
Not Available
Birefringence
0.027
0.008-0.010
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
