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Prase
Prase

Nephrite
Nephrite



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Prase
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Nephrite

Prase and Nephrite Optical Properties

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Optical Properties

Luster

-
Vitreous, Greasy

Pleochroism

-
None

Dispersion

0.010.01
0.005 1
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Transparency

Transparent, Translucent
Translucent

Refractive Index

1.544-1.5531.600-1.627
1 3.25
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Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

0.0090.027
0 0.296
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Clarity

Transparent
Translucent

Prase and Nephrite Optic Character

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

Similar to their colors, Prase and Nephrite 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.