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Agate
Agate

Bastnasite
Bastnasite



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Agate
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Bastnasite

Agate and Bastnasite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Greasy, Pearly

Pleochroism

Absent
Faint

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.530-1.5431.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.0040.100
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Agate and Bastnasite Optic Character

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

Agate and Bastnasite Transparency

Similar to their colors, Agate 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, Agate is Translucent while Agate is Translucent in appearance.