Yttrium Aluminium Garnet and Williamsite Optical Properties

Yttrium Aluminium Garnet

Williamsite

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy

Pleochroism

Dispersion

0.030.03

0.005 1

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Transparency

TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.8331.530-1.575

1 3.25

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Optic Character

Crystal System

Birefringence

-9999-9999

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

TranslucentHerve Nicolas Lazzarelli

Yttrium Aluminium Garnet and Williamsite Optic Character

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

Similar to their colors, Yttrium Aluminium Garnet 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, Yttrium Aluminium Garnet is while Yttrium Aluminium Garnet is in appearance.