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Jasper and Cordierite Iolite Optical Properties


Cordierite Iolite and Jasper Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Strong trichroism: colorless to yellowish   

Dispersion
None   
0.02   
22

Transparency
Opaque   
Transparent   

Refractive Index
1.540   
1.542-1.578   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Not Available   

Birefringence
Not Available   
0.008-0.012   

Clarity
OpaqueHerve Nicolas Lazzarelli   
Transparent   

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Jasper and Cordierite Iolite Optic Character

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

Similar to their colors, Jasper 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, Jasper is Opaque while Jasper is Opaque in appearance.

Semi Precious

Semi Precious


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