Covellite and Cuprite Optical Properties

Covellite

Cuprite

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1 Optical Properties

1.1 Luster

Resinous

Adamantine

1.2 Pleochroism

Marked

visible

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

TranslucentWalter Schumann

1.5 Refractive Index

1.45-2.622.849

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

cubic

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

OpaqueAnthony et al

TranslucentWalter Schumann

Covellite and Cuprite Optic Character

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

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Covellite Vs Elbaite

Covellite Vs Fluorapatite

Covellite Vs Falcons Eye

Covellite and Cuprite Transparency

Similar to their colors, Covellite 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, Covellite is Handbook of mineralogy (2001) More from other references and OpaqueAnthony et al while Covellite is Handbook of mineralogy (2001) More from other references and OpaqueAnthony et al in appearance.