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Cuprite
Cuprite

Nephrite
Nephrite



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Cuprite
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Nephrite

Cuprite and Nephrite Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous, Greasy

Pleochroism

visible
None

Dispersion

0.050.01
0.005 1
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Transparency

TranslucentWalter Schumann
Translucent

Refractive Index

2.8491.600-1.627
1 3.25
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Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

-99990.027
0 0.296
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Clarity

TranslucentWalter Schumann
Translucent

Cuprite and Nephrite Optic Character

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

Cuprite and Nephrite Transparency

Similar to their colors, Cuprite 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, Cuprite is TranslucentWalter Schumann while Cuprite is TranslucentWalter Schumann in appearance.