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Thulite and Moldavite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Absent   
Present   

Dispersion
None   
Not Available   

Transparency
Transparent, Translucent   
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.   

Refractive Index
1.48-1.54   
1.695   

Optic Character
Not Available   
Not Available   

Crystal System
Amorphous   
Orthorhombic   

Birefringence
Not Available   
0.006-0.018   

Clarity
Transparent   
OpaqueHerve Nicolas Lazzarelli   

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