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Tantalite
Tantalite

Lepidocrocite
Lepidocrocite



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X
Tantalite
X
Lepidocrocite

Tantalite and Lepidocrocite Optical Properties

Optical Properties

Luster

Resinous
-

Pleochroism

-
Strong; X = colorless to yellow; Y = orange

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
-

Refractive Index

2.190-2.4571.940
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.083-9999
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
-

Tantalite and Lepidocrocite Optic Character

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

Similar to their colors, Tantalite and Lepidocrocite 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.