Optical Properties
Luster
Vitreous
Sub-Adamantine, Vitreous
Pleochroism
Trichroic
X = pale blue; Y = blue; Z = Prussian blue
Dispersion
Not Available
Not Available
Transparency
Transparent
Transparent
Refractive Index
1.607-1.672
1.809-1.859
Optic Character
Not Available
Not Available
Crystal System
monoclinic
monoclinic
Birefringence
0.065
0.050
Clarity
Transparent
Transparent
