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Omphacite
Omphacite

Antigorite
Antigorite



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Omphacite
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Antigorite

Omphacite and Antigorite Optical Properties

Optical Properties

Luster

Vitreous
Waxy, Silky, Resinous, Greasy

Pleochroism

Weak: colorless -- very pale green -- very pale green
pale greenish yellow

Dispersion

0.020.02
0.005 1
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Transparency

TranslucentAnthony et al
Translucent

Refractive Index

1.662-1.7231.530-1.575
1 3.25
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Optic Character

-
-

Crystal System

-
Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TranslucentAnthony et al
Translucent

Omphacite and Antigorite Optic Character

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

Similar to their colors, Omphacite and Antigorite 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.