Uvite and Zoisite Optical Properties

Uvite

Zoisite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Pale yellow colorlessAnthony et al

X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green

1.3 Dispersion

0.020.02

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent, Opaque . May be translucent in thin backlit sections.

1.5 Refractive Index

1.614-1.6661.685-1.707

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Orthorhombic

1.8 Birefringence

0.014-0.0320.006-0.018

0 0.296

1.9 Clarity

Transparent

Uvite and Zoisite Optic Character

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

Similar to their colors, Uvite and Zoisite 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.