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Atacamite
Atacamite

Goethite
Goethite



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Atacamite
X
Goethite

Atacamite and Goethite Optical Properties

Optical Properties

Luster

Adamantine, Vitreous
Adamantine

Pleochroism

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

Dispersion

0.030.05
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.8312.26-2.398
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0490.138
0 0.296
👆🏻

Clarity

-
-

Atacamite and Goethite Optic Character

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

Similar to their colors, Atacamite and Goethite 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.