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Hibonite and Cacoxenite Optical Properties


Cacoxenite and Hibonite Optical Properties


Optical Properties

Luster
Vitreous   
Silky   

Pleochroism
O = brownish gray; E = gray   
visible: O = Pale yellow E = Canary yellow to yellow orange   

Dispersion
Not Available   
Not Available   

Transparency
Handbook of mineralogy (2001)   
Not Available   

Refractive Index
1.79-1.807   
1.575-1.585   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Hexagonal   

Birefringence
Not Available   
Not Available   

Clarity
Handbook of mineralogy (2001)   
Not Available   

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Hibonite and Cacoxenite Optic Character

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

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Hibonite and Cacoxenite Transparency

Similar to their colors, Hibonite and Cacoxenite 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.

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