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Omphacite
Omphacite

Hibonite
Hibonite



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Omphacite
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Hibonite

Omphacite and Hibonite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak: colorless -- very pale green -- very pale green
O = brownish gray; E = gray

Dispersion

0.020.02
0.005 1
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Transparency

TranslucentAnthony et al
-

Refractive Index

1.662-1.7231.79-1.807
1 3.25
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Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

-9999-9999
0 0.296
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Clarity

TranslucentAnthony et al
-

Omphacite and Hibonite Optic Character

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

Similar to their colors, Omphacite and Hibonite 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.