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Gypsum
Gypsum

Austinite
Austinite



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Gypsum
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Austinite

Gypsum and Austinite Optical Properties

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Optical Properties

Luster

Vitreous, Silky, Pearly, Waxy
Subadamantine, Silky

Pleochroism

None
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.521-1.5311.759
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0100.024
0 0.296
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Clarity

Transparent
-

Gypsum and Austinite Optic Character

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

Similar to their colors, Gypsum and Austinite 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.