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Copper
Copper

Almandine
Almandine



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Copper
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Almandine

Copper and Almandine Optical Properties

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Optical Properties

Luster

-
Greasy, Vitreous

Pleochroism

-
None

Dispersion

0.000.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.770-1.820
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
cubic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Copper and Almandine Optic Character

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

Copper and Almandine Transparency

Similar to their colors, Copper and Almandine 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, Copper is while Copper is in appearance.