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Pargasite and Peridot Optical Properties


Peridot and Pargasite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

Pleochroism
Not Available   
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli   

Dispersion
Not Available   
0.02   
18

Transparency
Transparent   
Transparent   

Refractive Index
1.613-1.663   
1.64-1.69   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
0.020   
0.036   

Clarity
Transparent   
Transparent   

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Pargasite and Peridot Optic Character

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

Similar to their colors, Pargasite and Peridot 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, Pargasite is Transparent while Pargasite is Transparent in appearance.

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