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Kyanite Cyprine and Euclase Optical Properties


Euclase 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   
Weak: colorless-(greenish) yellow   

Dispersion
0.02   
18
0.02   
23

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.710-1.735   
1.650-1.677   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Not Available   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   

Birefringence
0.012-0.033   
0.019-0.025   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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<< Physical Properties

Kyanite Cyprine and Euclase Optic Character

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

Similar to their colors, Kyanite Cyprine and Euclase 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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