Chrysoprase and Kyanite Optical Properties

Chrysoprase

Kyanite

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Vitreous, Pearly

1.2 Pleochroism

AbsentWalter Schumann

Trichroic

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

Not Available

1.5 Refractive Index

1.530-1.5431.71-1.74

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Triclinic

1.8 Birefringence

0.004Not Available

0 0.296

1.9 Clarity

Translucent

Color grading system

Chrysoprase and Kyanite Optic Character

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

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Chrysoprase and Kyanite Transparency

Similar to their colors, Chrysoprase and Kyanite 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, Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque while Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque in appearance.