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Pyrope and Nephrite Optical Properties


Nephrite and Pyrope Optical Properties


Optical Properties

Luster
Greasy, Vitreous  
Vitreous, Greasy  

Pleochroism
None  
None  

Dispersion
0.02  
99+
0.01  
99+

Transparency
-  
Translucent  

Refractive Index
1.720-1.756  
1.600-1.627  

Optic Character
-  
-  

Crystal System
cubic  
monoclinic  

Birefringence
-9999  
0.027  

Clarity
TransparentUlrich Henn and Claudio C. Milisenda  
Translucent  

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<< Physical Properties

Pyrope and Nephrite Optic Character

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

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Pyrope and Nephrite Transparency

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

Red Gemstones

Red Gemstones


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