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Carnelian and Pearl Optical Properties


Pearl and Carnelian Optical Properties


Optical Properties

Luster
Vitreous   
Pearly   

Pleochroism
AbsentWalter Schumann   
AbsentWalter Schumann   

Dispersion
None   
None   

Transparency
Translucent, Transparent to nearly opaque   
Translucent, Opaque   

Refractive Index
1.535-1.539   
1.52-1.66   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.003-0.009   
0.156   

Clarity
Translucent   
Translucent   

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Carnelian and Pearl Optic Character

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

Similar to their colors, Carnelian and Pearl 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, Carnelian is Translucent and Transparent to nearly opaque while Carnelian is Translucent and Transparent to nearly opaque in appearance.

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