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Kyanite Cyprine and Iolite Optical Properties


Iolite and Kyanite Cyprine Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli   
Not Available   

Dispersion
0.02   
18
Not Available   

Transparency
Transparent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.710-1.735   
1.52-1.56   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.012-0.033   
Not Available   

Clarity
Transparent   
Transparent to translucent   

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Kyanite Cyprine and Iolite Optic Character

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

Similar to their colors, Kyanite Cyprine and Iolite 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, Kyanite Cyprine is Transparent while Kyanite Cyprine is Transparent in appearance.

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Green Gemstones


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