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Elaeolite
Elaeolite

Polyhalite
Polyhalite



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Elaeolite
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Polyhalite

Elaeolite and Polyhalite Optical Properties

Optical Properties

Luster

Greasy
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.546-1.548
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Triclinic

Birefringence

-99990.021
0 0.296
👆🏻

Clarity

-
-

Elaeolite and Polyhalite Optic Character

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

Elaeolite and Polyhalite Transparency

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