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Vanadinite
Vanadinite

Thulite
Thulite



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Vanadinite
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Thulite

Vanadinite and Thulite Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

-
Present

Dispersion

0.150.02
0.005 1
👆🏻

Transparency

-
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

2.4161.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.0660.006-0.018
0 0.296
👆🏻

Clarity

-
OpaqueHerve Nicolas Lazzarelli

Vanadinite and Thulite Optic Character

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

Vanadinite and Thulite Transparency

Similar to their colors, Vanadinite and Thulite 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, Vanadinite is while Vanadinite is in appearance.