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Fluorite and Covellite Optical Properties


Covellite and Fluorite Optical Properties


Optical Properties

Luster
Vitreous   
Resinous   

Pleochroism
AbsentWalter Schumann   
Marked   

Dispersion
0.01   
30
Not Available   

Transparency
Transparent, Translucent, Transparent to translucent   
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references   

Refractive Index
1.432-1.436   
1.45-2.62   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
Hexagonal   

Birefringence
Not Available   
Not Available   

Clarity
Transparent   
OpaqueAnthony et al   

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Fluorite and Covellite Optic Character

Fluorite and Covellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Fluorite and Covellite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Fluorite and Covellite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Fluorite and Covellite Transparency

Similar to their colors, Fluorite and Covellite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Fluorite is Translucent, Transparent and Transparent to translucent while Fluorite is Translucent, Transparent and Transparent to translucent in appearance.

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