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Anatase
Anatase

Covellite
Covellite



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Anatase
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Covellite

Anatase and Covellite Optical Properties

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1 Optical Properties
1.1 Luster
Adamantine
Resinous
1.2 Pleochroism
Weak
Marked
1.3 Dispersion
0.21NA
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
2.488-2.5621.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Hexagonal
1.8 Birefringence
0.073Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueAnthony et al

Anatase and Covellite Optic Character

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

Anatase and Covellite Transparency

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