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Adamite
Adamite

Covellite
Covellite



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Adamite
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Covellite

Adamite and Covellite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Resinous
1.2 Pleochroism
NilArthur Thomas
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.708-1.7221.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic
Hexagonal
1.8 Birefringence
0.031-0.050Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueAnthony et al

Adamite and Covellite Optic Character

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

Adamite and Covellite Transparency

Similar to their colors, Adamite 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, Adamite is Transparent while Adamite is Transparent in appearance.