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Hibonite and Forsterite Optical Properties


Forsterite and Hibonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
O = brownish gray; E = gray   
colorless.   

Dispersion
Not Available   
Not Available   

Transparency
Handbook of mineralogy (2001)   
Transparent   

Refractive Index
1.79-1.807   
1.635-1.671   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Orthorhombic   

Birefringence
Not Available   
0.033-0.042   

Clarity
Handbook of mineralogy (2001)   
Transparent   

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Hibonite and Forsterite Optic Character

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

Similar to their colors, Hibonite and Forsterite 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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