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Rubellite
Rubellite

Bastnasite
Bastnasite



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Rubellite
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Bastnasite

Rubellite and Bastnasite Optical Properties

Optical Properties

Luster

-
Vitreous, Greasy, Pearly

Pleochroism

Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Faint

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.614-1.6661.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.014-0.0400.100
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Rubellite and Bastnasite Optic Character

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

Rubellite and Bastnasite Transparency

Similar to their colors, Rubellite 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, Rubellite is Transparent and Translucent while Rubellite is Transparent and Translucent in appearance.