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Amazonite
Amazonite

Atacamite
Atacamite



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Amazonite
X
Atacamite

Amazonite and Atacamite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine, Vitreous

Pleochroism

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

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Translucent, Translucent to opaque
-

Refractive Index

1.522-1.5301.831
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
Orthorhombic

Birefringence

0.008-0.0100.049
0 0.296
👆🏻

Clarity

Translucent
-

Amazonite and Atacamite Optic Character

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

Amazonite and Atacamite Transparency

Similar to their colors, Amazonite 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, Amazonite is Translucent and Translucent to opaque while Amazonite is Translucent and Translucent to opaque in appearance.