Chrysoprase and Vesuvianite Idocrase Optical Properties

Chrysoprase

Vesuvianite Idocrase

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Optical Properties

Luster

Vitreous, Waxy

Pleochroism

Dispersion

0.010.02

0.005 1

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Transparency

Translucent, Opaque, Translucent to nearly opaque

Transparent

Refractive Index

1.530-1.5431.700-1.725

1 3.25

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Optic Character

Uniaxial/-

Crystal System

Trigonal

Birefringence

0.0040.002-0.012

0 0.296

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Clarity

Translucent

Transparent

Chrysoprase and Vesuvianite Idocrase Optic Character

Chrysoprase and Vesuvianite Idocrase optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Chrysoprase and Vesuvianite Idocrase 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 Vesuvianite Idocrase 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. Vesuvianite Idocrase has Uniaxial/- character.

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Chrysoprase and Vesuvianite Idocrase Transparency

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