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Carnelian and Riebeckite Optical Properties


Riebeckite and Carnelian Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Silky   

Pleochroism
AbsentWalter Schumann   
X = blue   

Dispersion
None   
Not Available   

Transparency
Translucent, Transparent to nearly opaque   
Not Available   

Refractive Index
1.535-1.539   
1.680-1.698   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
monoclinic   

Birefringence
0.003-0.009   
0.005-0.008   

Clarity
Translucent   
Not Available   

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Carnelian and Riebeckite Optic Character

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

Similar to their colors, Carnelian and Riebeckite 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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