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Beryl
Beryl

Bastnasite
Bastnasite



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Beryl
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Bastnasite

Beryl and Bastnasite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
Weak to distinct
0.01
Transparent, Transparent to opaque
1.560-1.604
-
Hexagonal
0.0040-0.0070
Transparent
 
Vitreous, Greasy, Pearly
Faint
0.02
-
1.717-1.722
-
Hexagonal
0.100
TransparentUlrich Henn and Claudio C. Milisenda

Beryl and Bastnasite Optic Character

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

Beryl and Bastnasite Transparency

Similar to their colors, Beryl 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, Beryl is while Beryl is in appearance.