Chlorapatite and Kyanite Cyprine Optical Properties

Chlorapatite

Kyanite Cyprine

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Weak to moderate; in pale colors.Anthony et al

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

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.665-1.6671.710-1.735

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Not Available

1.8 Birefringence

Not Available0.012-0.033

0 0.296

1.9 Clarity

Transparent

Chlorapatite and Kyanite Cyprine Optic Character

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

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