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Azurmalachite
Azurmalachite

Covellite
Covellite



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Azurmalachite
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Covellite

Azurmalachite and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Silky
Resinous
1.2 Pleochroism
AbsentWalter Schumann
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.655-1.9091.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
monoclinic
Hexagonal
1.8 Birefringence
0.108-0.254Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
OpaqueAnthony et al

Azurmalachite and Covellite Optic Character

Azurmalachite and Covellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Azurmalachite and Covellite 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 Azurmalachite and Covellite 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. Azurmalachite has Biaxial/+ character.

Azurmalachite and Covellite Transparency

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