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Anhydrite
Anhydrite

Humite
Humite



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Anhydrite
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Humite

Anhydrite and Humite Optical Properties

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Optical Properties

Luster

Pearly, Greasy
Vitreous

Pleochroism

For violet varieties
pale golden yellow or deep golden yellow

Dispersion

0.010.03
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.570-1.6141.607-1.675
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.042-0.044-9999
0 0.296
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Clarity

Transparent
Transparent

Anhydrite and Humite Optic Character

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

Anhydrite and Humite Transparency

Similar to their colors, Anhydrite and Humite 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, Anhydrite is Transparent while Anhydrite is Transparent in appearance.