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Hibonite and Ekanite Optical Properties


Ekanite and Hibonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
O = brownish gray; E = gray   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Handbook of mineralogy (2001)   
Transparent   

Refractive Index
1.79-1.807   
1.593-1.596   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Tetragonal Trapezohedral H-M Symbol (4 2 2) Space Group: I 422   

Birefringence
Not Available   
0.001   

Clarity
Handbook of mineralogy (2001)   
Transparent   

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Hibonite and Ekanite Optic Character

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

Similar to their colors, Hibonite and Ekanite 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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