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Cordierite Iolite and Ajoite Optical Properties


Ajoite and Cordierite Iolite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Strong trichroism: colorless to yellowish   
X: very light bluish green; Y and Z: brilliant bluish green   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent   
Not Available   

Refractive Index
1.542-1.578   
1.550   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Not Available   
Triclinic   

Birefringence
0.008-0.012   
0.091   

Clarity
Transparent   
Not Available   

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Cordierite Iolite and Ajoite Optic Character

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

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

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