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Jasper
Jasper

Covellite
Covellite



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Jasper
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Covellite

Jasper and Covellite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
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
1.5401.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Hexagonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
OpaqueHerve Nicolas Lazzarelli
OpaqueAnthony et al

Jasper and Covellite Optic Character

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

Jasper and Covellite Transparency

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