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Tantalite
Tantalite

Pectolite
Pectolite



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Tantalite
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Pectolite

Tantalite and Pectolite Optical Properties

Optical Properties

Luster

Resinous
Silky

Pleochroism

-
-

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
Transparent

Refractive Index

2.190-2.4571.595-1.645
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Triclinic

Birefringence

0.0830.028-0.038
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
Transparent

Tantalite and Pectolite Optic Character

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

Similar to their colors, Tantalite and Pectolite 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.