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Neptunite
Neptunite

Hiddenite
Hiddenite



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Neptunite
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Hiddenite

Neptunite and Hiddenite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
x=yellow-orange
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.692-1.7341.657-1.681
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0294-0.04520.014-0.016
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Neptunite and Hiddenite Optic Character

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

Similar to their colors, Neptunite and Hiddenite 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.