Luster
Vitreous, Pearly
Vitreous
Pleochroism
-
X = red; Y = yellow-orange; Z = emerald-green
Dispersion
0.030.02
0.005
1
👆🏻
Transparency
-
Transparent, Translucent, Transparent to translucent
Refractive Index
1.634-1.6371.746-1.763
1
3.25
👆🏻
Optic Character
-
Biaxial/+
Crystal System
Orthorhombic
Orthorhombic
Birefringence
-99990.007-0.013
0
0.296
👆🏻
Clarity
-
Transparent