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Vanadinite
Vanadinite

Andalusite
Andalusite



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Vanadinite
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Andalusite

Vanadinite and Andalusite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Greasy

Pleochroism

-
strongly trichroic

Dispersion

0.150.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

2.4161.627-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.0660.009-0.010
0 0.296
👆🏻

Clarity

-
Transparent

Vanadinite and Andalusite Optic Character

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

Similar to their colors, Vanadinite and Andalusite 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.