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Sussexite and Cordierite Iolite Optical Properties


Cordierite Iolite and Sussexite Optical Properties


Optical Properties

Luster
Fibrous, Pearly   
Vitreous   

Pleochroism
Not Available   
Strong trichroism: colorless to yellowish   

Dispersion
Not Available   
0.02   
22

Transparency
Transparent   
Transparent   

Refractive Index
Not Available   
1.542-1.578   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Not Available   

Birefringence
Not Available   
0.008-0.012   

Clarity
Transparent   
Transparent   

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Sussexite and Cordierite Iolite Optic Character

Sussexite and Cordierite Iolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sussexite and Cordierite Iolite 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 Sussexite and Cordierite Iolite 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. Cordierite Iolite has Biaxial/+ character.

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Sussexite and Cordierite Iolite Transparency

Similar to their colors, Sussexite and Cordierite Iolite 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, Sussexite is Transparent while Sussexite is Transparent in appearance.

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