Chrysoberyl and Kyanite Cyprine Optical Properties

Chrysoberyl

Kyanite Cyprine

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

X = red; Y = yellow-orange; Z = emerald-green

Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli

1.3 Dispersion

0.020.02

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent

1.5 Refractive Index

1.746-1.7631.710-1.735

1 3.25

1.6 Optic Character

Biaxial/+

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.007-0.0130.012-0.033

0 0.296

1.9 Clarity

Transparent

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.