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Simpsonite
Simpsonite

Atacamite
Atacamite



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Simpsonite
X
Atacamite

Simpsonite and Atacamite Optical Properties

Optical Properties

Luster

Adamantine
Adamantine, Vitreous

Pleochroism

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

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.994-2.0401.831
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.0460.049
0 0.296
👆🏻

Clarity

-
-

Simpsonite and Atacamite Optic Character

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

Simpsonite and Atacamite Transparency

Similar to their colors, Simpsonite 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, Simpsonite is while Simpsonite is in appearance.