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Povondraite
Povondraite

Covellite
Covellite



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Povondraite
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Covellite

Povondraite and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Resinous
1.2 Pleochroism
Strong: yellow-brown
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
Not Available1.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Hexagonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Translucent
OpaqueAnthony et al

Povondraite and Covellite Optic Character

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

Povondraite and Covellite Transparency

Similar to their colors, Povondraite 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, Povondraite is Translucent while Povondraite is Translucent in appearance.