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Cuprite
Cuprite

Erythrite
Erythrite



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Cuprite
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Erythrite

Cuprite and Erythrite Optical Properties

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Optical Properties

Luster

Adamantine
Subadamantine, Pearly

Pleochroism

visible
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

0.050.03
0.005 1
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Transparency

TranslucentWalter Schumann
-

Refractive Index

2.8491.626-1.629
1 3.25
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Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

-9999-9999
0 0.296
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Clarity

TranslucentWalter Schumann
-

Cuprite and Erythrite Optic Character

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

Cuprite and Erythrite Transparency

Similar to their colors, Cuprite and Erythrite 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, Cuprite is TranslucentWalter Schumann while Cuprite is TranslucentWalter Schumann in appearance.