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Idocrase
Idocrase

Chalcedony
Chalcedony



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Idocrase
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Chalcedony

Idocrase and Chalcedony Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent, Translucent to opaque

Refractive Index

1.67-1.761.530-1.543
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Trigonal

Birefringence

-99990.003-0.009
0 0.296
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Clarity

-
Translucent

Idocrase and Chalcedony Optic Character

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

Similar to their colors, Idocrase and Chalcedony 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.