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Norbergite and Kyanite Cyprine Optical Properties


Kyanite Cyprine and Norbergite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Pale yellow very pale yellow colorlessAnthony et al   
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli   

Dispersion
Not Available   
0.02   
18

Transparency
Transparent   
Transparent   

Refractive Index
1.563-1.593   
1.710-1.735   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Not Available   

Birefringence
Not Available   
0.012-0.033   

Clarity
Transparent   
Transparent   

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Norbergite and Kyanite Cyprine Optic Character

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

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Norbergite and Kyanite Cyprine Transparency

Similar to their colors, Norbergite 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, Norbergite is Transparent while Norbergite is Transparent in appearance.

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Yellow Gemstones


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