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Atacamite
Atacamite

Sinhalite
Sinhalite



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Atacamite
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Sinhalite

Atacamite and Sinhalite Optical Properties

Optical Properties

Luster

Adamantine, Vitreous
-

Pleochroism

X = pale green; Y = yellow-green; Z = grass-green
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.8311.665-1.712
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0490.036-0.042
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Atacamite and Sinhalite Optic Character

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

Similar to their colors, Atacamite and Sinhalite 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.