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Blue John and Cacoxenite Optical Properties


Cacoxenite and Blue John Optical Properties


Optical Properties

Luster
Not Available   
Silky   

Pleochroism
Not Available   
visible: O = Pale yellow E = Canary yellow to yellow orange   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Not Available   

Refractive Index
1.432-1.436   
1.575-1.585   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Hexagonal   

Birefringence
Not Available   
Not Available   

Clarity
Transparent   
Not Available   

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<< Physical Properties

Blue John and Cacoxenite Optic Character

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

Similar to their colors, Blue John and Cacoxenite 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, Blue John is Transparent while Blue John is Transparent in appearance.

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