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Chrysocolla
Chrysocolla

Covellite
Covellite



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Chrysocolla
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Covellite

Chrysocolla and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Resinous
1.2 Pleochroism
AbsentWalter Schumann
Marked
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.460-1.5701.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Hexagonal
1.8 Birefringence
0.023-0.050Not Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
OpaqueAnthony et al

Chrysocolla and Covellite Optic Character

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

Chrysocolla and Covellite Transparency

Similar to their colors, Chrysocolla 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, Chrysocolla is Opaque while Chrysocolla is Opaque in appearance.