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Vlasovite and Cordierite Iolite Optical Properties


Cordierite Iolite and Vlasovite Optical Properties


Optical Properties

Luster
Greasy, Vitreous, Pearly   
Vitreous   

Pleochroism
(x): colorless. (y): colorless. (z): colorless.   
Strong trichroism: colorless to yellowish   

Dispersion
Not Available   
0.02   
22

Transparency
Not Available   
Transparent   

Refractive Index
1.607   
1.542-1.578   

Optic Character
Not Available   
Biaxial/+   

Crystal System
monoclinic   
Not Available   

Birefringence
Not Available   
0.008-0.012   

Clarity
Not Available   
Transparent   

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Vlasovite and Cordierite Iolite Optic Character

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

Similar to their colors, Vlasovite 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, Vlasovite is Not Available while Vlasovite is Not Available in appearance.

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