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Idocrase
Idocrase

Sellaite
Sellaite



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Idocrase
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Sellaite

Idocrase and Sellaite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.67-1.761.378-1.390
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
tetragonal

Birefringence

-99990.012
0 0.296
👆🏻

Clarity

-
Transparent

Idocrase and Sellaite Optic Character

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

Similar to their colors, Idocrase and Sellaite 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.