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Agrellite
Agrellite

Atacamite
Atacamite



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Agrellite
X
Atacamite

Agrellite and Atacamite Optical Properties

Optical Properties

Luster

Pearly
Adamantine, Vitreous

Pleochroism

colorless.
X = pale green; Y = yellow-green; Z = grass-green

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.5671.831
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Orthorhombic

Birefringence

0.0140.049
0 0.296
👆🏻

Clarity

-
-

Agrellite and Atacamite Optic Character

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

Agrellite and Atacamite Transparency

Similar to their colors, Agrellite and Atacamite 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, Agrellite is while Agrellite is in appearance.