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Omphacite
Omphacite

Sylvite
Sylvite



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Omphacite
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Sylvite

Omphacite and Sylvite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak: colorless -- very pale green -- very pale green
Visible in colored crystals

Dispersion

0.020.01
0.005 1
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Transparency

TranslucentAnthony et al
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Refractive Index

1.662-1.7231.4903
1 3.25
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Optic Character

-
-

Crystal System

-
Isometric

Birefringence

-9999-9999
0 0.296
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Clarity

TranslucentAnthony et al
-

Omphacite and Sylvite Optic Character

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

Similar to their colors, Omphacite and Sylvite 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.