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Hibonite
Hibonite

Parisite
Parisite



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Hibonite
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Parisite

Hibonite and Parisite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
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)
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.79-1.8071.671-1.771
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
Not Available0.099-0.100
Achroite
0 0.296
1.9 Clarity
Handbook of mineralogy (2001)
TransparentUlrich Henn and Claudio C. Milisenda

Hibonite and Parisite Optic Character

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

Similar to their colors, Hibonite and Parisite 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.