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Tantalite
Tantalite

Variscite
Variscite



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Tantalite
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Variscite

Tantalite and Variscite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Waxy

Pleochroism

-
-

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
Translucent, Opaque . May be translucent when backlit on the edges.

Refractive Index

2.190-2.4571.560-1.594
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0830.031
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
Translucent

Tantalite and Variscite Optic Character

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

Tantalite and Variscite Transparency

Similar to their colors, Tantalite and Variscite 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, Tantalite is TransparentWalter Schumann while Tantalite is TransparentWalter Schumann in appearance.