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Chrysoberyl and Kyanite Cyprine Optical Properties


Kyanite Cyprine and Chrysoberyl Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
X = red; Y = yellow-orange; Z = emerald-green   
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli   

Dispersion
0.02   
24
0.02   
18

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent   

Refractive Index
1.746-1.763   
1.710-1.735   

Optic Character
Biaxial/+   
Biaxial/+   

Crystal System
Orthorhombic   
Not Available   

Birefringence
0.007-0.013   
0.012-0.033   

Clarity
Transparent   
Transparent   

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Chrysoberyl and Kyanite Cyprine Optic Character

Chrysoberyl and Kyanite Cyprine optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Chrysoberyl and Kyanite Cyprine 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 Chrysoberyl and Kyanite Cyprine 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. Chrysoberyl has Biaxial/+ character.Kyanite Cyprine has Biaxial/+ character.

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Chrysoberyl and Kyanite Cyprine Transparency

Similar to their colors, Chrysoberyl and Kyanite Cyprine 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, Chrysoberyl is Translucent, Transparent and Transparent to translucent while Chrysoberyl is Translucent, Transparent and Transparent to translucent in appearance.

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