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Agate
Agate

Atacamite
Atacamite



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Agate
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Atacamite

Agate and Atacamite Optical Properties

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Optical Properties

Luster

Vitreous
Adamantine, Vitreous

Pleochroism

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

Dispersion

0.010.03
0.005 1
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Transparency

Translucent
-

Refractive Index

1.530-1.5431.831
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.0040.049
0 0.296
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Clarity

Translucent
-

Agate and Atacamite Optic Character

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

Agate and Atacamite Transparency

Similar to their colors, Agate 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, Agate is Translucent while Agate is Translucent in appearance.