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Uvite
Uvite

Colemanite
Colemanite



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Uvite
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Colemanite

Uvite and Colemanite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Pale yellow colorlessAnthony et al
-

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.614-1.6661.584-1.615
1 3.25
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Optic Character

-
-

Crystal System

-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

Birefringence

0.014-0.0320.028-0.030
0 0.296
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Clarity

Transparent
Transparent

Uvite and Colemanite Optic Character

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

Similar to their colors, Uvite and Colemanite 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.