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Covellite
Covellite

Azurmalachite
Azurmalachite



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Covellite
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Azurmalachite

Covellite and Azurmalachite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Vitreous, Silky
1.2 Pleochroism
Marked
AbsentWalter Schumann
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Translucent
1.5 Refractive Index
1.45-2.621.655-1.909
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Hexagonal
monoclinic
1.8 Birefringence
Not Available0.108-0.254
Achroite
0 0.296
1.9 Clarity
OpaqueAnthony et al
Translucent

Covellite and Azurmalachite Optic Character

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

Covellite and Azurmalachite Transparency

Similar to their colors, Covellite and Azurmalachite 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.