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Bastnasite
Bastnasite

Stichtite
Stichtite



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Bastnasite
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Stichtite

Bastnasite and Stichtite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Waxy, Resinous

Pleochroism

Faint
Weak

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.717-1.7221.516-1.544
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

0.1000.026
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Bastnasite and Stichtite Optic Character

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

Similar to their colors, Bastnasite and Stichtite 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.