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Pezzottaite and Foitite Optical Properties


Foitite and Pezzottaite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Moderate dichroic   
Strong: pale lavender dark blueAnthony et al   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
TranslucentAnthony et al, Translucent   

Refractive Index
1.598-1.620   
Not Available   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m   

Birefringence
0.008-0.011   
Not Available   

Clarity
Transparent   
TranslucentAnthony et al   

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Pezzottaite and Foitite Optic Character

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

Similar to their colors, Pezzottaite and Foitite 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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