Williamsite and Phosgenite Optical Properties

Williamsite

Phosgenite

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy

Adamantine

Pleochroism

Weakly pleochroic with O reddish and E greenish in thick sections.

Dispersion

0.030.04

0.005 1

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Transparency

TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.530-1.5752.117-2.145

1 3.25

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Optic Character

Crystal System

tetragonal

Birefringence

-99990.027

0 0.296

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Clarity

TranslucentHerve Nicolas Lazzarelli

TransparentUlrich Henn and Claudio C. Milisenda

Williamsite and Phosgenite Optic Character

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

Similar to their colors, Williamsite and Phosgenite 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.