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Mellite
Mellite

Cuprite
Cuprite



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Mellite
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Cuprite

Mellite and Cuprite Optical Properties

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Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Weak: yellowish brown yellowAnthony et al
visible

Dispersion

0.010.05
0.005 1
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Transparency

-
TranslucentWalter Schumann

Refractive Index

1.509-1.5412.849
1 3.25
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Optic Character

-
-

Crystal System

-
cubic

Birefringence

0.030-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TranslucentWalter Schumann

Mellite and Cuprite Optic Character

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

Mellite and Cuprite Transparency

Similar to their colors, Mellite and Cuprite 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, Mellite is while Mellite is in appearance.