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Smithsonite
Smithsonite

Painite
Painite



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Smithsonite
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Painite

Smithsonite and Painite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
Strong dichroism: yellow-brown red to brown-violet (pinkish samples: nearly colorless pale orangy-pink)Herve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
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Transparency

Translucent
-

Refractive Index

1.620-1.8501.787-1.816
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.223-0.2270.029
0 0.296
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Clarity

Translucent
-

Smithsonite and Painite Optic Character

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

Smithsonite and Painite Transparency

Similar to their colors, Smithsonite and Painite 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, Smithsonite is Translucent while Smithsonite is Translucent in appearance.