Williamsite and Sinhalite Optical Properties

Williamsite

Sinhalite

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Dispersion

0.030.02

0.005 1

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Transparency

TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.530-1.5751.665-1.712

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

-99990.036-0.042

0 0.296

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Clarity

TranslucentHerve Nicolas Lazzarelli

TransparentUlrich Henn and Claudio C. Milisenda

Williamsite and Sinhalite Optic Character

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

Similar to their colors, Williamsite and Sinhalite 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, Williamsite is TranslucentHerve Nicolas Lazzarelli while Williamsite is TranslucentHerve Nicolas Lazzarelli in appearance.