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Pargasite
Pargasite

Uvarovite
Uvarovite



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Pargasite
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Uvarovite

Pargasite and Uvarovite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.613-1.6631.87
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
cubic

Birefringence

0.020-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Pargasite and Uvarovite Optic Character

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

Pargasite and Uvarovite Transparency

Similar to their colors, Pargasite and Uvarovite 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.