Kyanite Cyprine and Lepidocrocite Optical Properties

Kyanite Cyprine

Lepidocrocite

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

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

Strong; X = colorless to yellow; Y = orange

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

Not Available

1.5 Refractive Index

1.710-1.7351.940

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Not Available

Orthorhombic

1.8 Birefringence

0.012-0.033Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Kyanite Cyprine and Lepidocrocite Optic Character

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

Similar to their colors, Kyanite Cyprine and Lepidocrocite 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.