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Musgravite
Musgravite

Polyhalite
Polyhalite



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Musgravite
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Polyhalite

Musgravite and Polyhalite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.719-1.7391.546-1.548
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

0.014-0.0160.021
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Musgravite and Polyhalite Optic Character

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

Musgravite and Polyhalite Transparency

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