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Bastnasite
Bastnasite

Vanadinite
Vanadinite



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Bastnasite
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Vanadinite

Bastnasite and Vanadinite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Resinous

Pleochroism

Faint
-

Dispersion

0.020.15
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.717-1.7222.416
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.1000.066
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Bastnasite and Vanadinite Optic Character

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

Bastnasite and Vanadinite Transparency

Similar to their colors, Bastnasite 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, Bastnasite is while Bastnasite is in appearance.