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Gypsum
Gypsum

Brookite
Brookite



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Gypsum
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Brookite

Gypsum and Brookite Optical Properties

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Optical Properties

Luster

Vitreous, Silky, Pearly, Waxy
Adamantine

Pleochroism

None
Very weak

Dispersion

0.010.20
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.521-1.5312.583-2.741
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0100.117
0 0.296
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Clarity

Transparent
-

Gypsum and Brookite Optic Character

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

Similar to their colors, Gypsum and Brookite 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.