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Hiddenite
Hiddenite

Tantalite
Tantalite



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Hiddenite
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Tantalite

Hiddenite and Tantalite Optical Properties

Optical Properties

Luster

Vitreous
Resinous

Pleochroism

Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli
-

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Transparent
TransparentWalter Schumann

Refractive Index

1.657-1.6812.190-2.457
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.014-0.0160.083
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentWalter Schumann

Hiddenite and Tantalite Optic Character

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

Hiddenite and Tantalite Transparency

Similar to their colors, Hiddenite 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, Hiddenite is Transparent while Hiddenite is Transparent in appearance.