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Vishnevite and Afghanite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Pearly   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Gemstones (2009)   
Not Available   

Refractive Index
1.523   
1.490-1.507   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Hexagonal   

Birefringence
0.006   
0.002-0.012   

Clarity
Transparent   
Not Available   

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