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Anhydrite
Anhydrite

Azurite
Azurite



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Anhydrite
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Azurite

Anhydrite and Azurite Optical Properties

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Optical Properties

Luster

Pearly, Greasy
Vitreous

Pleochroism

For violet varieties
Visible shades of blue

Dispersion

0.010.03
0.005 1
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Transparency

Transparent
Transparent, Translucent

Refractive Index

1.570-1.6141.720-1.850
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.042-0.0440.108
0 0.296
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Clarity

Transparent
Transparent

Anhydrite and Azurite Optic Character

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

Similar to their colors, Anhydrite and Azurite 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.