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Covellite
Covellite

Moss Agate
Moss Agate



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Moss Agate

Covellite and Moss Agate Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Not Available
1.2 Pleochroism
Marked
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
TranslucentWalter Schumann, Gemstones of the world (2001)
1.5 Refractive Index
1.45-2.62
1.530-1.540
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
Not Available
0.004
1.9 Clarity
OpaqueAnthony et al
TranslucentWalter Schumann

Covellite and Moss Agate Optic Character

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

Similar to their colors, Covellite and Moss Agate 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.