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Bastnasite
Bastnasite

Hanksite
Hanksite



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Bastnasite
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Hanksite

Bastnasite and Hanksite 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
-
0.03
-
1.481
-
Hexagonal
0.020
-

Bastnasite and Hanksite Optic Character

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

Similar to their colors, Bastnasite and Hanksite 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.