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Nephrite
Nephrite

Grossular
Grossular



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Nephrite
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Grossular

Nephrite and Grossular Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Greasy, Vitreous

Pleochroism

None
None

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.600-1.6271.730-1.760
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
cubic

Birefringence

0.0270.020
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Nephrite and Grossular Optic Character

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

Similar to their colors, Nephrite and Grossular 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.