Pleochroism
-
Distinct: pale pink bluish-pinkHerve Nicolas Lazzarelli
Transparency
Transparent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.531-1.600
1.573-1.600
Crystal System
-
Hexagonal
Birefringence
0.004-0.037
0.005-0.009
Clarity
Transparent
Transparent to translucent