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Moissanite
Moissanite

Polyhalite
Polyhalite



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Moissanite
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Polyhalite

Moissanite and Polyhalite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.100.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.648-2.6911.546-1.548
1 3.25
👆🏻

Optic Character

-
-

Crystal System

6H polytype
Triclinic

Birefringence

0.0430.021
0 0.296
👆🏻

Clarity

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

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

Moissanite and Polyhalite Transparency

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