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Chrysoberyl
Chrysoberyl

Grandidierite
Grandidierite



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X
Chrysoberyl
X
Grandidierite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
X = red; Y = yellow-orange; Z = emerald-green
0.02
Transparent, Translucent, Transparent to translucent
1.746-1.763
Biaxial/+
Orthorhombic
0.007-0.013
Transparent
 
Vitreous, Pearly
visible
0.04
-
1.578-1.639
-
Orthorhombic
0.037-0.039
-