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Helenite
Helenite

Hibonite
Hibonite



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Helenite
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Hibonite

Helenite and Hibonite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
O = brownish gray; E = gray
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Handbook of mineralogy (2001)
1.5 Refractive Index
Not Available1.79-1.807
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Hexagonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
Handbook of mineralogy (2001)

Helenite and Hibonite Optic Character

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

Helenite and Hibonite Transparency

Similar to their colors, Helenite and Hibonite 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, Helenite is Not Available while Helenite is Not Available in appearance.