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Grossular
Grossular

Nephrite
Nephrite



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Grossular
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Nephrite

Grossular and Nephrite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous, Greasy

Pleochroism

None
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.730-1.7601.600-1.627
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

0.0200.027
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Grossular and Nephrite Optic Character

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

Grossular and Nephrite Transparency

Similar to their colors, Grossular 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, Grossular is while Grossular is in appearance.