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Hydrogrossular
Covellite
Covellite and Hydrogrossular Optical Properties


Optical Properties
Luster
-  
Resinous  
Pleochroism
-  
Marked  
Dispersion
0.02  
99+
0.08  
17
Transparency
Translucent  
OpaqueAnthony et al  
Refractive Index
1.680-1.712  
1.45-2.62  
Optic Character
-  
-  
Crystal System
-  
Hexagonal  
Birefringence
-9999  
-9999  
Clarity
Translucent  
OpaqueAnthony et al  
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Blue Gemstones

Blue Gemstones

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