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Vesuvianite
Vesuvianite

Neptunite
Neptunite



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Vesuvianite
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Neptunite

Vesuvianite and Neptunite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

slight in colored varieties
x=yellow-orange

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.703-1.7521.692-1.734
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
monoclinic

Birefringence

0.004-0.0060.0294-0.0452
0 0.296
👆🏻

Clarity

-
Translucent

Vesuvianite and Neptunite Optic Character

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

Vesuvianite and Neptunite Transparency

Similar to their colors, Vesuvianite 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, Vesuvianite is while Vesuvianite is in appearance.