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Tantalite
Tantalite

Antigorite
Antigorite



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Tantalite
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Antigorite

Tantalite and Antigorite Optical Properties

Optical Properties

Luster

Resinous
Waxy, Silky, Resinous, Greasy

Pleochroism

-
pale greenish yellow

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
Translucent

Refractive Index

2.190-2.4571.530-1.575
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

0.083-9999
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
Translucent

Tantalite and Antigorite Optic Character

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

Similar to their colors, Tantalite and Antigorite 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.