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Creedite and Nepheline Optical Properties


Nepheline and Creedite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent   
Transparent, Translucent   

Refractive Index
1.461-1.485   
1.529-1.547   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Hexagonal   

Birefringence
0.024   
0.003-0.004   

Clarity
Transparent   
Transparent   

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Creedite and Nepheline Optic Character

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

Similar to their colors, Creedite 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, Creedite is Translucent and Transparent while Creedite is Translucent and Transparent in appearance.

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