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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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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
O = brownish gray; E = gray
Pale yellow colorlessAnthony et al
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Handbook of mineralogy (2001)
Transparent
1.5 Refractive Index
1.79-1.8071.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
Not Available0.014-0.032
Achroite
0 0.296
1.9 Clarity
Handbook of mineralogy (2001)
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 Handbook of mineralogy (2001) while Hibonite is Handbook of mineralogy (2001) in appearance.