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Adularia
Adularia

Anhydrite
Anhydrite



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Adularia
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Anhydrite

Adularia and Anhydrite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.01
TransparentArthur Thomas
1.518-1.536
-
-
0.005-0.008
TransparentArthur Thomas
 
Pearly, Greasy
For violet varieties
0.01
Transparent
1.570-1.614
-
Orthorhombic
0.042-0.044
Transparent

Adularia and Anhydrite Optic Character

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

Adularia and Anhydrite Transparency

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