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Pezzottaite and Fayalite Optical Properties


Fayalite and Pezzottaite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Resinous   

Pleochroism
Moderate dichroic   
Faint   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
TransparentAnthony et al, Handbook of mineralogy (2001)   

Refractive Index
1.598-1.620   
1.827-1.879   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Orthorhombic   

Birefringence
0.008-0.011   
0.042-0.051   

Clarity
Transparent   
TransparentAnthony et al   

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Pezzottaite and Fayalite Optic Character

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

Similar to their colors, Pezzottaite and Fayalite 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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