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Oligoclase and Cymophane Optical Properties


Cymophane and Oligoclase Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Transparent   

Refractive Index
1.538-1.550   
1.739-1.770   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Not Available   

Birefringence
0.010   
0.007-0.013   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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<< Physical Properties

Oligoclase and Cymophane Optic Character

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

Similar to their colors, Oligoclase and Cymophane 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, Oligoclase is Gemmological Tables (2004) while Oligoclase is Gemmological Tables (2004) in appearance.

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