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Adamite and Cordierite Iolite Optical Properties


Cordierite Iolite and Adamite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
NilArthur Thomas   
Strong trichroism: colorless to yellowish   

Dispersion
Not Available   
0.02   
22

Transparency
Transparent   
Transparent   

Refractive Index
1.708-1.722   
1.542-1.578   

Optic Character
Biaxial/+   
Biaxial/+   

Crystal System
Orthorhombic   
Not Available   

Birefringence
0.031-0.050   
0.008-0.012   

Clarity
Transparent   
Transparent   

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Adamite and Cordierite Iolite Optic Character

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

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Adamite and Cordierite Iolite Transparency

Similar to their colors, Adamite 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, Adamite is Transparent while Adamite is Transparent in appearance.

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