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Bastnasite
Bastnasite

Hexagonite
Hexagonite



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Bastnasite
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Hexagonite

Bastnasite and Hexagonite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Greasy, Pearly
Faint
0.02
-
1.717-1.722
-
Hexagonal
0.100
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous
bluish–red
-
Transparent
1.599-1.637
-
-
0.019-0.028
Transparent

Bastnasite and Hexagonite Optic Character

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

Similar to their colors, Bastnasite and Hexagonite 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.