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Atacamite
Atacamite

Sylvite
Sylvite



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Atacamite
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Sylvite

Atacamite and Sylvite Optical Properties

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Optical Properties

Luster

Adamantine, Vitreous
Vitreous

Pleochroism

X = pale green; Y = yellow-green; Z = grass-green
Visible in colored crystals

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.8311.4903
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Isometric

Birefringence

0.049-9999
0 0.296
👆🏻

Clarity

-
-

Atacamite and Sylvite Optic Character

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

Similar to their colors, Atacamite and Sylvite 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.