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Atacamite
Atacamite

Cuprite
Cuprite



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Atacamite
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Cuprite

Atacamite and Cuprite Optical Properties

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Optical Properties

Luster

Adamantine, Vitreous
Adamantine

Pleochroism

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

Dispersion

0.030.05
0.005 1
👆🏻

Transparency

-
TranslucentWalter Schumann

Refractive Index

1.8312.849
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

0.049-9999
0 0.296
👆🏻

Clarity

-
TranslucentWalter Schumann

Atacamite and Cuprite Optic Character

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

Atacamite and Cuprite Transparency

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