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Tavorite
Tavorite

Bastnasite
Bastnasite



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Tavorite
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Bastnasite

Tavorite and Bastnasite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Greasy, Pearly

Pleochroism

Yellow-green colorlessAnthony et al
Faint

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

11.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

-99990.100
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Tavorite and Bastnasite Optic Character

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

Tavorite and Bastnasite Transparency

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