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Stibiotantalite
Stibiotantalite

Emerald
Emerald



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Stibiotantalite
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Emerald

Stibiotantalite and Emerald Optical Properties

Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

-
Strong dichroism: yellow green Lazzarelli

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

2.37-2.451.565-1.602
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.080.0040-0.0070
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Stibiotantalite and Emerald Optic Character

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

Stibiotantalite and Emerald Transparency

Similar to their colors, Stibiotantalite and Emerald 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, Stibiotantalite is while Stibiotantalite is in appearance.