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Atacamite
Atacamite

Phosphosiderite
Phosphosiderite



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Atacamite
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Phosphosiderite

Atacamite and Phosphosiderite Optical Properties

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
-
 
Vitreous
Pale rose-red carmine-red colorlessAnthony et al
0.04
Transparent
1.692-1.739
-
-
0.240
Transparent

Atacamite and Phosphosiderite Optic Character

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

Similar to their colors, Atacamite and Phosphosiderite 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.