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Sinhalite
Blue John
Blue John and Sinhalite Optical Properties


Optical Properties
Luster
-  
-  
Pleochroism
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli  
-  
Dispersion
0.02  
99+
0.02  
99+
Transparency
-  
Transparent  
Refractive Index
1.665-1.712  
1.432-1.436  
Optic Character
-  
-  
Crystal System
Orthorhombic  
-  
Birefringence
0.036-0.042  
-9999  
Clarity
TransparentUlrich Henn and Claudio C. Milisenda  
Transparent  
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