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Cymophane and Powellite Optical Properties


Powellite and Cymophane Optical Properties


Optical Properties

Luster
Not Available   
Greasy, Subadamantine   

Pleochroism
Not Available   
In deeply colored specimens: blue greenAnthony et al   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent   

Refractive Index
1.739-1.770   
1.974-1.984   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.007-0.013   
Not Available   

Clarity
Transparent   
Transparent   

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<< Physical Properties

Cymophane and Powellite Optic Character

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

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Cymophane and Powellite Transparency

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

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