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Bastnasite
Bastnasite

Elaeolite
Elaeolite



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Bastnasite
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Elaeolite

Bastnasite and Elaeolite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Greasy

Pleochroism

Faint
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.717-1.722-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
-

Birefringence

0.100-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Bastnasite and Elaeolite Optic Character

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

Similar to their colors, Bastnasite and Elaeolite 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.