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Gyrolite and Hibonite Optical Properties


Hibonite and Gyrolite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous   

Pleochroism
Not Available   
O = brownish gray; E = gray   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Handbook of mineralogy (2001)   

Refractive Index
1.535   
1.79-1.807   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Hexagonal   

Birefringence
0.0140   
Not Available   

Clarity
Not Available   
Handbook of mineralogy (2001)   

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Gyrolite and Hibonite Optic Character

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

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Gyrolite and Hibonite Transparency

Similar to their colors, Gyrolite 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, Gyrolite is Not Available while Gyrolite is Not Available in appearance.

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