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Anhydrite
Anhydrite

Sunstone
Sunstone



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Anhydrite
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Sunstone

Anhydrite and Sunstone Optical Properties

Optical Properties

Luster

Pearly, Greasy
Vitreous

Pleochroism

For violet varieties
Weak or absentWalter Schumann

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.570-1.6141.53-1.55
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Triclinic

Birefringence

0.042-0.0440.007-0.010
0 0.296
👆🏻

Clarity

Transparent
Transparent to translucent

Anhydrite and Sunstone Optic Character

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

Similar to their colors, Anhydrite and Sunstone 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.