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Shungite
Shungite

Bastnasite
Bastnasite



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Shungite
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Bastnasite

Shungite and Bastnasite Optical Properties

Optical Properties

Luster

-
Vitreous, Greasy, Pearly

Pleochroism

-
Faint

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

-99990.100
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Shungite and Bastnasite Optic Character

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

Shungite and Bastnasite Transparency

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