Home
Gemstones


Cordierite Iolite and Jeremejevite Optical Properties


Jeremejevite and Cordierite Iolite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Strong trichroism: colorless to yellowish   
Colorless   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.542-1.578   
1.638-1.650   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Not Available   
Hexagonal   

Birefringence
0.008-0.012   
0.0130   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

Benefits >>
<< Physical Properties

Cordierite Iolite and Jeremejevite Optic Character

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

Compare Blue Gemstones

Cordierite Iolite and Jeremejevite Transparency

Similar to their colors, Cordierite 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, Cordierite Iolite is Transparent while Cordierite Iolite is Transparent in appearance.

Blue Gemstones

Blue Gemstones


Compare Blue Gemstones