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Smithsonite and Nepheline Optical Properties


Nepheline and Smithsonite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous, Greasy   

Pleochroism
AbsentWalter Schumann   
Not Available   

Dispersion
0.01   
26
Not Available   

Transparency
Translucent   
Transparent, Translucent   

Refractive Index
1.620-1.850   
1.529-1.547   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Hexagonal   

Birefringence
0.223-0.227   
0.003-0.004   

Clarity
Translucent   
Transparent   

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Smithsonite and Nepheline Optic Character

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

Similar to their colors, Smithsonite 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, Smithsonite is Translucent while Smithsonite is Translucent in appearance.

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