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Hibonite
Hibonite

Vishnevite
Vishnevite



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Hibonite
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Vishnevite

Hibonite and Vishnevite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Pearly
1.2 Pleochroism
O = brownish gray; E = gray
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Handbook of mineralogy (2001)
Not Available
1.5 Refractive Index
1.79-1.8071.490-1.507
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Hexagonal
1.8 Birefringence
Not Available0.002-0.012
Achroite
0 0.296
1.9 Clarity
Handbook of mineralogy (2001)
Not Available

Hibonite and Vishnevite Optic Character

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

Similar to their colors, Hibonite and Vishnevite 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.