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Pezzottaite and Friedelite Optical Properties


Friedelite and Pezzottaite Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
Moderate dichroic   
NilArthur Thomas   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Translucent   

Refractive Index
1.598-1.620   
1.627-1.663   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m   

Birefringence
0.008-0.011   
0.032-0.035   

Clarity
Transparent   
Translucent   

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Pezzottaite and Friedelite Optic Character

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

Similar to their colors, Pezzottaite and Friedelite 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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