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Bastnasite
Bastnasite

Zektzerite
Zektzerite



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Bastnasite
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Zektzerite

Bastnasite and Zektzerite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Vitreous, Pearly

Pleochroism

Faint
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.717-1.7221.582-1.585
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.1000.003
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Bastnasite and Zektzerite Optic Character

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

Similar to their colors, Bastnasite and Zektzerite 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.