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Neptunite
Neptunite

Realgar
Realgar



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Neptunite
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Realgar

Neptunite and Realgar Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
x=yellow-orange
Nearly colorless to pale golden yellowAnthony et al
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gems
1.5 Refractive Index
1.692-1.7342.538-2.704
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.0294-0.04520.166
Achroite
0 0.296
1.9 Clarity
Translucent
Gems

Neptunite and Realgar Optic Character

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

Neptunite and Realgar Transparency

Similar to their colors, Neptunite and Realgar 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, Neptunite is Translucent while Neptunite is Translucent in appearance.