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Pyromorphite
Pyromorphite

Covellite
Covellite



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Pyromorphite
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Covellite

Pyromorphite and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Resinous, Subadamantine
Resinous
1.2 Pleochroism
Weak
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
2.042-2.0591.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Hexagonal
1.8 Birefringence
0.010Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueAnthony et al

Pyromorphite and Covellite Optic Character

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

Pyromorphite and Covellite Transparency

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