Luster
Silky
Silky, Vitreous
Pleochroism
-
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
Dispersion
0.010.03
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.595-1.6451.672-1.688
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Triclinic
monoclinic
Birefringence
0.028-0.0380.139-0.143
0
0.296
👆🏻
Clarity
Transparent
-