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Hibonite
Hibonite

Ammolite
Ammolite



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Hibonite
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Ammolite

Hibonite and Ammolite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Silky, Vitreous
1.2 Pleochroism
O = brownish gray; E = gray
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Handbook of mineralogy (2001)
Not Available
1.5 Refractive Index
1.79-1.8071.520-1.670
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
Not Available0.135-0.145
Achroite
0 0.296
1.9 Clarity
Handbook of mineralogy (2001)
Not Available

Hibonite and Ammolite Optic Character

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

Similar to their colors, Hibonite and Ammolite 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.