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Covellite
Covellite

Danburite
Danburite



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Covellite
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Danburite

Covellite and Danburite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Resinous
Marked
0.08
OpaqueAnthony et al
1.45-2.62
-
Hexagonal
-9999
OpaqueAnthony et al
 
Vitreous, Greasy
Weak: pale yellow yellow
0.02
-
1.627-1.639
Biaxial/+
Orthorhombic
0.006
TransparentUlrich Henn and Claudio C. Milisenda

Covellite and Danburite Optic Character

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

Covellite and Danburite Transparency

Similar to their colors, Covellite and Danburite 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 while Covellite is in appearance.