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Cuprite
Cuprite

Spinel
Spinel



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Cuprite
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Spinel

Cuprite and Spinel Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

visible
Absent

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

TranslucentWalter Schumann
Transparent, Translucent, Transparent to translucent

Refractive Index

2.8491.73
1 3.25
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Optic Character

-
-

Crystal System

cubic
Isometric

Birefringence

-9999-9999
0 0.296
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Clarity

TranslucentWalter Schumann
TransparentUlrich Henn and Claudio C. Milisenda

Cuprite and Spinel Optic Character

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

Similar to their colors, Cuprite and Spinel 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.