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Amethyst and Pyrope Optical Properties


Pyrope and Amethyst Optical Properties


Optical Properties

Luster
Vitreous  
Greasy, Vitreous  

Pleochroism
None  
None  

Dispersion
0.01  
99+
0.02  
99+

Transparency
Transparent, Transparent to translucent  
-  

Refractive Index
1.544-1.553  
1.720-1.756  

Optic Character
-  
-  

Crystal System
Trigonal  
cubic  

Birefringence
0.009  
-9999  

Clarity
Transparent  
TransparentUlrich Henn and Claudio C. Milisenda  

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Amethyst and Pyrope Optic Character

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

Similar to their colors, Amethyst and Pyrope 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.

Semi Precious Gemstones

Semi Precious Gemstones


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