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Bastnsite
Bastnsite

Elbaite
Elbaite



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Bastnsite
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Elbaite

Bastnsite and Elbaite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Pale green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.72-1.821.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.014-0.032
0 0.296
👆🏻

Clarity

-
Transparent

Bastnsite and Elbaite Optic Character

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

Bastnsite and Elbaite Transparency

Similar to their colors, Bastnsite and Elbaite 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, Bastnsite is while Bastnsite is in appearance.