Bowenite and Tantalite Optical Properties

Bowenite

Tantalite

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy

Resinous

Pleochroism

Dispersion

0.010.03

0.005 1

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Transparency

TranslucentHerve Nicolas Lazzarelli

TransparentWalter Schumann

Refractive Index

1.530-1.5752.190-2.457

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

-99990.083

0 0.296

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Clarity

TranslucentHerve Nicolas Lazzarelli

TransparentWalter Schumann

Bowenite and Tantalite Optic Character

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

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Bowenite and Tantalite Transparency

Similar to their colors, Bowenite 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, Bowenite is TranslucentHerve Nicolas Lazzarelli while Bowenite is TranslucentHerve Nicolas Lazzarelli in appearance.