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Pargasite
Pargasite

Idocrase
Idocrase



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Pargasite
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Idocrase

Pargasite and Idocrase Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.613-1.6631.67-1.76
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
tetragonal

Birefringence

0.020-9999
0 0.296
👆🏻

Clarity

Transparent
-

Pargasite and Idocrase Optic Character

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

Similar to their colors, Pargasite and Idocrase 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.