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Ruby
Eosphorite
Eosphorite and Ruby Optical Properties


Optical Properties
Luster
Vitreous, Adamantine  
Vitreous, Resinous  
Pleochroism
Strong: purplish-red  
Visible: X = yellow; Y = pink; Z = pale pink to colorless  
Dispersion
0.02  
99+
0.01  
99+
Transparency
Transparent, Translucent, Transparent to opaque  
Transparent  
Refractive Index
1.762-1.778  
1.639-1.672  
Optic Character
-  
-  
Crystal System
Trigonal  
Orthorhombic  
Birefringence
0.008  
0.029-0.032  
Clarity
Transparent  
Transparent  
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