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Apatite
Apatite

Vanadinite
Vanadinite



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Apatite
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Vanadinite

Apatite and Vanadinite Optical Properties

Optical Properties

Luster

Vitreous
Resinous

Pleochroism

Blue stones – strong
-

Dispersion

0.010.15
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.628-1.6512.416
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.002-0.0080.066
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Apatite and Vanadinite Optic Character

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

Apatite and Vanadinite Transparency

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