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Nephrite
Nephrite

Rosasite
Rosasite



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X
Nephrite
X
Rosasite

Nephrite and Rosasite Optical Properties

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Optical Properties

Luster

Vitreous, Greasy
Silky, Vitreous

Pleochroism

None
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

Dispersion

0.010.03
0.005 1
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Transparency

Translucent
-

Refractive Index

1.600-1.6271.672-1.688
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.0270.139-0.143
0 0.296
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Clarity

Translucent
-

Nephrite and Rosasite Optic Character

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

Similar to their colors, Nephrite and Rosasite 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.