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Chalcedony and Chrome-Chalcedony Optical Properties


Chrome-Chalcedony and Chalcedony Optical Properties


Optical Properties

Luster
Vitreous   
Waxy   

Pleochroism
AbsentWalter Schumann   
Not Available   

Dispersion
None   
Not Available   

Transparency
Translucent, Translucent to opaque   
Translucent   

Refractive Index
1.530-1.543   
1.530-1.543   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.003-0.009   
0.003-0.009   

Clarity
Translucent   
Translucent   

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Chalcedony and Chrome-Chalcedony Optic Character

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

Similar to their colors, Chalcedony and Chrome-Chalcedony 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, Chalcedony is Translucent and Translucent to opaque while Chalcedony is Translucent and Translucent to opaque in appearance.

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