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Precious Opal and Violane Optical Properties


Optical Properties

Luster
-  
-  

Pleochroism
-  
-  

Dispersion
0.03  
99+
0.01  
99+

Transparency
Translucent  
Transparent, Translucent  

Refractive Index
1.668-1.703  
1.370-1.470  

Optic Character
-  
-  

Crystal System
-  
-  

Birefringence
0.024-0.030  
-9999  

Clarity
Translucent  
Transparent  

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