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Andradite and Neptunite Optical Properties


Neptunite and Andradite Optical Properties


Optical Properties

Luster
Adamantine, Resinous   
Vitreous   

Pleochroism
Not Available   
x=yellow-orange   

Dispersion
0.06   
7
Not Available   

Transparency
Transparent   
Translucent   

Refractive Index
1.88-1.94   
1.692-1.734   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
monoclinic   

Birefringence
0.057   
0.0294-0.0452   

Clarity
Transparent   
Translucent   

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Andradite and Neptunite Optic Character

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

Similar to their colors, Andradite and Neptunite 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, Andradite is Transparent while Andradite is Transparent in appearance.

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