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Gypsum
Gypsum

Pyroxmangite
Pyroxmangite



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Gypsum
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Pyroxmangite

Gypsum and Pyroxmangite Optical Properties

Optical Properties

Luster

Vitreous, Silky, Pearly, Waxy
Vitreous

Pleochroism

None
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.521-1.5311.735-1.756
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.0100.017-0.019
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Gypsum and Pyroxmangite Optic Character

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

Gypsum and Pyroxmangite Transparency

Similar to their colors, Gypsum and Pyroxmangite 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, Gypsum is Transparent and Translucent while Gypsum is Transparent and Translucent in appearance.