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Bertrandite
Bertrandite

Musgravite
Musgravite



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Bertrandite
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Musgravite

Bertrandite and Musgravite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
none.
0.01
TransparentAnthony et al
1.583-1.614
-
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
-9999
TransparentAnthony et al
 
Vitreous
-
0.02
-
1.719-1.739
-
Trigonal
0.014-0.016
TransparentUlrich Henn and Claudio C. Milisenda

Bertrandite and Musgravite Optic Character

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

Bertrandite and Musgravite Transparency

Similar to their colors, Bertrandite and Musgravite 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, Bertrandite is while Bertrandite is in appearance.