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Tantalite
Tantalite

Taaffeite
Taaffeite



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Tantalite
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Taaffeite

Tantalite and Taaffeite Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

-
Weak

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
-

Refractive Index

2.190-2.4571.70-1.73
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.0830.055
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
-

Tantalite and Taaffeite Optic Character

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

Similar to their colors, Tantalite and Taaffeite 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.