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Norbergite
Norbergite

Anhydrite
Anhydrite



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Norbergite
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Anhydrite

Norbergite and Anhydrite Optical Properties

Optical Properties

Luster

Vitreous
Pearly, Greasy

Pleochroism

Pale yellow very pale yellow colorlessAnthony et al
For violet varieties

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.563-1.5931.570-1.614
1 3.25
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Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.042-0.044
0 0.296
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Clarity

Transparent
Transparent

Norbergite and Anhydrite Optic Character

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

Norbergite and Anhydrite Transparency

Similar to their colors, Norbergite 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, Norbergite is Transparent while Norbergite is Transparent in appearance.