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Vanadinite
Vanadinite

Sugilite
Sugilite



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Vanadinite
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Sugilite

Vanadinite and Sugilite Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

-
Weak

Dispersion

0.150.02
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

2.4161.607-1.612
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.0660.003
0 0.296
👆🏻

Clarity

-
Translucent

Vanadinite and Sugilite Optic Character

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

Similar to their colors, Vanadinite and Sugilite 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.