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Hibonite
Hibonite

Uvite
Uvite



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Hibonite
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Uvite

Hibonite and Uvite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

O = brownish gray; E = gray
Pale yellow colorlessAnthony et al

Dispersion

0.020.02
0.005 1
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Transparency

-
Transparent

Refractive Index

1.79-1.8071.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
-

Birefringence

-99990.014-0.032
0 0.296
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Clarity

-
Transparent

Hibonite and Uvite Optic Character

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

Hibonite and Uvite Transparency

Similar to their colors, Hibonite and Uvite 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, Hibonite is while Hibonite is in appearance.