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Cordierite Iolite and Celestine Optical Properties


Celestine and Cordierite Iolite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Pearly   

Pleochroism
Strong trichroism: colorless to yellowish   
Weakly trichroiC   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent   
Gems   

Refractive Index
1.542-1.578   
1.619-1.635   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.008-0.012   
0.004-0.012   

Clarity
Transparent   
Gems   

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Cordierite Iolite and Celestine Optic Character

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

Similar to their colors, Cordierite Iolite and Celestine 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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