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Hackmanite
Flint
Flint and Hackmanite Optical Properties


Optical Properties
Luster
Vitreous  
-  
Pleochroism
-  
-  
Dispersion
0.03  
99+
0.15  
14
Transparency
-  
-  
Refractive Index
1.483-1.487  
-9999  
Optic Character
-  
-  
Crystal System
-  
-  
Birefringence
-9999  
-9999  
Clarity
Transparent  
-  
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Semi Precious Gemstones

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