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Uvite
Uvite

Sugilite
Sugilite



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Uvite
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Sugilite

Uvite and Sugilite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Pale yellow colorlessAnthony et al
Weak

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Translucent

Refractive Index

1.614-1.6661.607-1.612
1 3.25
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Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.014-0.0320.003
0 0.296
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Clarity

Transparent
Translucent

Uvite and Sugilite Optic Character

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

Uvite and Sugilite Transparency

Similar to their colors, Uvite and Sugilite 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.