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Nephrite
Nephrite

Gedrite
Gedrite



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Nephrite
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Gedrite

Nephrite and Gedrite Optical Properties

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Optical Properties

Luster

Vitreous, Greasy
Vitreous

Pleochroism

None
Weak to moderate

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.600-1.6271.625-1.718
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

0.027-9999
0 0.296
👆🏻

Clarity

Translucent
Transparent

Nephrite and Gedrite Optic Character

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

Similar to their colors, Nephrite and Gedrite 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.