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Idocrase
Idocrase

Vishnevite
Vishnevite



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Idocrase
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Vishnevite

Idocrase and Vishnevite Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.67-1.761.490-1.507
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Hexagonal

Birefringence

-99990.002-0.012
0 0.296
👆🏻

Clarity

-
-

Idocrase and Vishnevite Optic Character

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

Idocrase and Vishnevite Transparency

Similar to their colors, Idocrase and Vishnevite 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, Idocrase is while Idocrase is in appearance.