1 Optical Properties
1.1 Luster
1.2 Pleochroism
AbsentWalter Schumann
Strong dichroism: blue to colourless\
1.3 Dispersion
1.6 Transparency
Gemmological Tables (2004)
Transparent
1.7 Refractive Index
1.735-1.7901.560-1.604
1
3.25
2.6 Optic Character
Not Available
Not Available
2.7 Crystal System
2.8 Birefringence
Not Available0.003-0.010
0
0.296
2.13 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent