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Vesuvianite
Vesuvianite

Tantalite
Tantalite



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Vesuvianite
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Tantalite

Vesuvianite and Tantalite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Resinous

Pleochroism

slight in colored varieties
-

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

-
TransparentWalter Schumann

Refractive Index

1.703-1.7522.190-2.457
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.004-0.0060.083
0 0.296
👆🏻

Clarity

-
TransparentWalter Schumann

Vesuvianite and Tantalite Optic Character

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

Similar to their colors, Vesuvianite and Tantalite 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.