Sinhalite and Williamsite Optical Properties

Sinhalite

Williamsite

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Dispersion

0.020.03

0.005 1

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Transparency

TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.665-1.7121.530-1.575

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.036-0.042-9999

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

TranslucentHerve Nicolas Lazzarelli

Sinhalite and Williamsite Optic Character

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

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