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Prase
Prase

Omphacite
Omphacite



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Prase
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Omphacite

Prase and Omphacite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

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

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Translucent
TranslucentAnthony et al

Refractive Index

1.544-1.5531.662-1.723
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

0.009-9999
0 0.296
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Clarity

Transparent
TranslucentAnthony et al

Prase and Omphacite Optic Character

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

Prase and Omphacite Transparency

Similar to their colors, Prase and Omphacite 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, Prase is Transparent and Translucent while Prase is Transparent and Translucent in appearance.