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Bastnasite
Bastnasite

Verdite
Verdite



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Bastnasite
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Verdite

Bastnasite and Verdite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Vitreous, Silky

Pleochroism

Faint
Extreme

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.717-1.7221.580
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Birefringence

0.100-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Bastnasite and Verdite Optic Character

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

Similar to their colors, Bastnasite and Verdite 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.