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Omphacite
Omphacite

Crocoite
Crocoite



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Omphacite
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Crocoite

Omphacite and Crocoite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Weak: colorless -- very pale green -- very pale green
Distinctly trichroic

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

TranslucentAnthony et al
Transparent

Refractive Index

1.662-1.7232.31-2.66
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TranslucentAnthony et al
Transparent

Omphacite and Crocoite Optic Character

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

Omphacite and Crocoite Transparency

Similar to their colors, Omphacite and Crocoite 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, Omphacite is TranslucentAnthony et al while Omphacite is TranslucentAnthony et al in appearance.