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Poudretteite and Neptunite Optical Properties


Neptunite and Poudretteite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Colorless   
x=yellow-orange   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Translucent   

Refractive Index
1.511-1.532   
1.692-1.734   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
monoclinic   

Birefringence
0.021   
0.0294-0.0452   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Translucent   

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Poudretteite and Neptunite Optic Character

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

Similar to their colors, Poudretteite 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, Poudretteite is Gemmological Tables (2004) More from other references while Poudretteite is Gemmological Tables (2004) More from other references in appearance.

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