Optical Properties
Luster
Adamantine
Not Available
Pleochroism
Distinct
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Dispersion
Not Available
0.02
22
Transparency
Translucent
Transparent, Translucent
Refractive Index
2.881-3.084
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Not Available
Birefringence
0.203
0.014-0.040
Clarity
Translucent
Transparent
