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Nephrite
Nephrite

Alabaster
Alabaster



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Nephrite
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Alabaster

Nephrite and Alabaster Optical Properties

Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

None
-

Dispersion

0.01-
0.005 1
👆🏻

Transparency

Translucent
Translucent

Refractive Index

1.600-1.6271.520-1.530
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.0270.010
0 0.296
👆🏻

Clarity

Translucent
Translucent

Nephrite and Alabaster Optic Character

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

Similar to their colors, Nephrite and Alabaster 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.