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Pezzottaite and Covellite Optical Properties


Covellite and Pezzottaite Optical Properties


Optical Properties

Luster
Vitreous   
Resinous   

Pleochroism
Moderate dichroic   
Marked   

Dispersion
Not Available   
Not Available   

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

Refractive Index
1.598-1.620   
1.45-2.62   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Hexagonal   

Birefringence
0.008-0.011   
Not Available   

Clarity
Transparent   
OpaqueAnthony et al   

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Pezzottaite and Covellite Optic Character

Pezzottaite and Covellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Pezzottaite 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 Pezzottaite 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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Pezzottaite and Covellite Transparency

Similar to their colors, Pezzottaite 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, Pezzottaite is Transparent while Pezzottaite is Transparent in appearance.

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