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Datolite and Iolite Optical Properties


Iolite and Datolite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
NilArthur Thomas   
Not Available   

Dispersion
0.02   
23
Not Available   

Transparency
Transparent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.621-1.675   
1.52-1.56   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
0.044   
Not Available   

Clarity
Transparent   
Transparent to translucent   

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<< Physical Properties

Datolite and Iolite Optic Character

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

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Datolite and Iolite Transparency

Similar to their colors, Datolite and 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, Datolite is Transparent while Datolite is Transparent in appearance.

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