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Anhydrite
Anhydrite

Pearl
Pearl



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Anhydrite
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Pearl

Anhydrite and Pearl Optical Properties

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Optical Properties

Luster

Pearly, Greasy
Pearly

Pleochroism

For violet varieties
-

Dispersion

0.010.03
0.005 1
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Transparency

Transparent
Translucent, Opaque

Refractive Index

1.570-1.6141.52-1.66
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.042-0.0440.156
0 0.296
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Clarity

Transparent
Translucent

Anhydrite and Pearl Optic Character

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

Similar to their colors, Anhydrite and Pearl 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.