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Anhydrite
Anhydrite

Blue spinel
Blue spinel



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Anhydrite
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Blue spinel

Anhydrite and Blue spinel Optical Properties

Optical Properties

Luster

Pearly, Greasy
-

Pleochroism

For violet varieties
-

Dispersion

0.01-
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.570-1.614-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.042-0.044-9999
0 0.296
👆🏻

Clarity

Transparent
-

Anhydrite and Blue spinel Optic Character

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

Similar to their colors, Anhydrite and Blue spinel 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.