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Omphacite
Omphacite

Fluorapatite
Fluorapatite



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Omphacite
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Fluorapatite

Omphacite and Fluorapatite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Weak: colorless -- very pale green -- very pale green
Weak to strong if coloreD

Dispersion

0.020.03
0.005 1
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Transparency

TranslucentAnthony et al
Transparent

Refractive Index

1.662-1.7231.631-1.650
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
Transparent

Omphacite and Fluorapatite Optic Character

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

Similar to their colors, Omphacite and Fluorapatite 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.