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Omphacite
Omphacite

Pyrope Almandine
Pyrope Almandine



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Omphacite
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Pyrope Almandine

Omphacite and Pyrope Almandine Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Weak: colorless -- very pale green -- very pale green
-

Dispersion

0.020.02
0.005 1
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Transparency

TranslucentAnthony et al
TransparentGemdat.org

Refractive Index

1.662-1.7231.73-1.77
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

-9999-9999
0 0.296
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Clarity

TranslucentAnthony et al
TransparentGemdat.org

Omphacite and Pyrope Almandine Optic Character

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

Similar to their colors, Omphacite and Pyrope Almandine 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.