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Marialite
Marialite

Bastnasite
Bastnasite



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Marialite
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Bastnasite

Marialite and Bastnasite Optical Properties

Optical Properties

Luster

Vitreous, Pearly, Resinous
Vitreous, Greasy, Pearly

Pleochroism

-
Faint

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.540-1.5501.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Hexagonal

Birefringence

0.004-0.0080.100
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Marialite and Bastnasite Optic Character

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

Marialite and Bastnasite Transparency

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