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Liddicoatite
Liddicoatite

Bastnasite
Bastnasite



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Liddicoatite
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Bastnasite

Liddicoatite and Bastnasite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Greasy, Pearly

Pleochroism

Strong: dark brown light brownAnthony et al
Faint

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

-99991.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

-99990.100
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Liddicoatite and Bastnasite Optic Character

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

Liddicoatite and Bastnasite Transparency

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