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Nephrite and Hibschite Optical Properties


Hibschite and Nephrite Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Vitreous   

Pleochroism
None   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
Semitransparent   

Refractive Index
1.600-1.627   
Not Available   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d   

Birefringence
0.027   
Not Available   

Clarity
Translucent   
TranslucentAnthony et al   

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Nephrite and Hibschite Optic Character

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

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Nephrite and Hibschite Transparency

Similar to their colors, Nephrite and Hibschite 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.

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