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Vesuvianite
Vesuvianite

Norbergite
Norbergite



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Vesuvianite
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Norbergite

Vesuvianite and Norbergite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

slight in colored varieties
Pale yellow very pale yellow colorlessAnthony et al

Dispersion

0.030.02
0.005 1
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Transparency

-
Transparent

Refractive Index

1.703-1.7521.563-1.593
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
-

Birefringence

0.004-0.006-9999
0 0.296
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Clarity

-
Transparent

Vesuvianite and Norbergite Optic Character

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

Similar to their colors, Vesuvianite and Norbergite 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.