Riesling Beryl and Kyanite Cyprine Optical Properties

Riesling Beryl

Kyanite Cyprine

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Strongly dichroicMartin H. Read

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

1.3 Dispersion

0.010.02

0.007 1

1.4 Transparency

Not Available

Transparent

1.5 Refractive Index

1.591.710-1.735

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Not Available

1.8 Birefringence

0.004-0.0100.012-0.033

0 0.296

1.9 Clarity

Not Available

Transparent

Riesling Beryl and Kyanite Cyprine Optic Character

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

Similar to their colors, Riesling Beryl 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, Riesling Beryl is Not Available while Riesling Beryl is Not Available in appearance.