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Gibbsite and Crocoite Optical Properties


Crocoite and Gibbsite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Adamantine   

Pleochroism
colorless.   
Distinctly trichroic   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent   

Refractive Index
Not Available   
2.31-2.66   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n   

Birefringence
Not Available   
Not Available   

Clarity
Not Available   
Transparent   

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Gibbsite and Crocoite Optic Character

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

Similar to their colors, Gibbsite and Crocoite 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, Gibbsite is Not Available while Gibbsite is Not Available in appearance.

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Grey Gemstones


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