Luster
Adamantine, Resinous
Vitreous
Pleochroism
Weak
-
Dispersion
0.030.01
0.005
1
👆🏻
Transparency
Transparent
Opaque
Refractive Index
2.280-2.4051.540
1
3.25
👆🏻
Optic Character
-
-
Crystal System
tetragonal
Trigonal
Birefringence
0.122-9999
0
0.296
👆🏻
Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli