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Marble and Nepheline Optical Properties


Nepheline and Marble Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Greasy   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent, Translucent   

Refractive Index
Not Available   
1.529-1.547   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Hexagonal   

Birefringence
Not Available   
0.003-0.004   

Clarity
Not Available   
Transparent   

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<< Physical Properties

Marble and Nepheline Optic Character

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

Similar to their colors, Marble and Nepheline 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, Marble is Not Available while Marble is Not Available in appearance.

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Green Gemstones


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