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Seraphinite
Seraphinite

Bastnasite
Bastnasite



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Seraphinite
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Bastnasite

Seraphinite and Bastnasite Optical Properties

Optical Properties

Luster

Pearly, Greasy
Vitreous, Greasy, Pearly

Pleochroism

-
Faint

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.571-1.5971.717-1.722
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

-
Hexagonal

Birefringence

-99990.100
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Seraphinite and Bastnasite Optic Character

Seraphinite and Bastnasite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Seraphinite 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 Seraphinite 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. Seraphinite has Biaxial/+ character.

Seraphinite and Bastnasite Transparency

Similar to their colors, Seraphinite 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, Seraphinite is Transparent while Seraphinite is Transparent in appearance.