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Jasper
Powellite
Powellite and Jasper Optical Properties


Optical Properties
Luster
Vitreous  
Greasy, Subadamantine  
Pleochroism
-  
In deeply colored specimens: blue greenAnthony et al  
Dispersion
0.01  
99+
0.03  
99+
Transparency
Opaque  
Transparent  
Refractive Index
1.540  
1.974-1.984  
Optic Character
-  
-  
Crystal System
Trigonal  
-  
Birefringence
-9999  
-9999  
Clarity
OpaqueHerve Nicolas Lazzarelli  
Transparent  
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Compare Semi Precious Gemstones

Semi Precious Gemstones

Semi Precious Gemstones

Compare Semi Precious Gemstones

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