Optical Properties
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Not Available
Not Available
Dispersion
Not Available
Not Available
Transparency
Transparent, Gemstones (2009)
Not Available
Refractive Index
1.523
1.490-1.507
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Hexagonal
Birefringence
0.006
0.002-0.012
Clarity
Transparent
Not Available
