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Vanadinite
Vanadinite

Lapis lazuli
Lapis lazuli



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Vanadinite
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Lapis lazuli

Vanadinite and Lapis lazuli Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Greasy

Pleochroism

-
-

Dispersion

0.15-
0.005 1
👆🏻

Transparency

-
Opaque

Refractive Index

2.4161.500-1.670
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

0.066-9999
0 0.296
👆🏻

Clarity

-
-

Vanadinite and Lapis lazuli Optic Character

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

Similar to their colors, Vanadinite and Lapis lazuli 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.