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Californite and Cordierite Iolite Optical Properties


Cordierite Iolite and Californite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Weak; present colour lighter   
Strong trichroism: colorless to yellowish   

Dispersion
Not Available   
0.02   
22

Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)   
Transparent   

Refractive Index
1.700-1.725   
1.542-1.578   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Not Available   

Birefringence
0.001-0.012   
0.008-0.012   

Clarity
TranslucentWalter Schumann   
Transparent   

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Californite and Cordierite Iolite Optic Character

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

Similar to their colors, Californite 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, Californite is Gemstones of the world (2001) and TranslucentWalter Schumann while Californite is Gemstones of the world (2001) and TranslucentWalter Schumann in appearance.

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