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Idocrase
Idocrase

Phenakite
Phenakite



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Idocrase
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Phenakite

Idocrase and Phenakite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.67-1.761.650-1.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Trigonal

Birefringence

-99990.016
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Idocrase and Phenakite Optic Character

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

Similar to their colors, Idocrase and Phenakite 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.