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Pyrope and Chrysoprase Optical Properties


Chrysoprase and Pyrope Optical Properties


Optical Properties

Luster
Greasy, Vitreous  
Vitreous, Waxy  

Pleochroism
None  
-  

Dispersion
0.02  
99+
0.01  
99+

Transparency
-  
Translucent, Opaque, Translucent to nearly opaque  

Refractive Index
1.720-1.756  
1.530-1.543  

Optic Character
-  
-  

Crystal System
cubic  
Trigonal  

Birefringence
-9999  
0.004  

Clarity
TransparentUlrich Henn and Claudio C. Milisenda  
Translucent  

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Pyrope and Chrysoprase Optic Character

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

Similar to their colors, Pyrope and Chrysoprase 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.

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