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Phenakite and Pezzottaite Optical Properties


Pezzottaite and Phenakite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli   
Moderate dichroic   

Dispersion
0.02   
24
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Transparent   

Refractive Index
1.650-1.695   
1.598-1.620   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Hexagonal   

Birefringence
0.016   
0.008-0.011   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Phenakite and Pezzottaite Optic Character

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

Similar to their colors, Phenakite and Pezzottaite 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, Phenakite is Gemmological Tables (2004) More from other references while Phenakite is Gemmological Tables (2004) More from other references in appearance.

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