Uvite and Williamsite Optical Properties

Uvite

Williamsite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Pale yellow colorlessAnthony et al

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

1.5 Refractive Index

1.614-1.6661.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

0.014-0.032Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Uvite and Williamsite Optic Character

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

Similar to their colors, Uvite 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, Uvite is Transparent while Uvite is Transparent in appearance.