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Atacamite
Atacamite

Pearl
Pearl



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Atacamite
X
Pearl

Atacamite and Pearl Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine, Vitreous
X = pale green; Y = yellow-green; Z = grass-green
0.03
-
1.831
-
Orthorhombic
0.049
-
 
Pearly
-
0.03
Translucent, Opaque
1.52-1.66
-
Orthorhombic
0.156
Translucent

Atacamite and Pearl Optic Character

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

Similar to their colors, Atacamite and Pearl 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.