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Fibrolite
Dioptase
Dioptase and Fibrolite Optical Properties


Optical Properties
Luster
-  
Vitreous  
Pleochroism
DistinctArthur Thomas  
Weak; dark emerald green  
Dispersion
0.02  
99+
0.04  
38
Transparency
Transparent  
TranslucentHerve Nicolas Lazzarelli  
Refractive Index
1.658-1.678  
1.644-1.720  
Optic Character
-  
-  
Crystal System
-  
Trigonal  
Birefringence
-9999  
0.051-0.053  
Clarity
Transparent  
TranslucentHerve Nicolas Lazzarelli  
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