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Nephrite
Nephrite

Chrysoprase
Chrysoprase



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Nephrite
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Chrysoprase

Nephrite and Chrysoprase Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Vitreous, Waxy

Pleochroism

None
-

Dispersion

0.010.01
0.005 1
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Transparency

Translucent
Translucent, Opaque, Translucent to nearly opaque

Refractive Index

1.600-1.6271.530-1.543
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.0270.004
0 0.296
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Clarity

Translucent
Translucent

Nephrite and Chrysoprase Optic Character

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

Nephrite and Chrysoprase Transparency

Similar to their colors, Nephrite and Chrysoprase 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, Nephrite is Translucent while Nephrite is Translucent in appearance.