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Iolite and Jeremejevite Optical Properties


Jeremejevite and Iolite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
Colorless   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent, Transparent to translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.52-1.56   
1.638-1.650   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Hexagonal   

Birefringence
Not Available   
0.0130   

Clarity
Transparent to translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Iolite and Jeremejevite Optic Character

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

Similar to their colors, Iolite and Jeremejevite 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, Iolite is Translucent, Transparent and Transparent to translucent while Iolite is Translucent, Transparent and Transparent to translucent in appearance.

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