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Pargasite
Pargasite

Prase
Prase



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Pargasite
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Prase

Pargasite and Prase Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.613-1.6631.544-1.553
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.0200.009
0 0.296
👆🏻

Clarity

Transparent
Transparent

Pargasite and Prase Optic Character

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

Similar to their colors, Pargasite and Prase 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.