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Pumpellyite
Pumpellyite

Cuprite
Cuprite



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Pumpellyite
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Cuprite

Pumpellyite and Cuprite Optical Properties

1 Optical Properties
1.1 Luster
Fibrous
Adamantine
1.2 Pleochroism
Not Available
visible
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
TranslucentWalter Schumann
1.5 Refractive Index
1.674-1.7642.849
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
cubic
1.8 Birefringence
0.014-0.016Not Available
Achroite
0 0.296
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
TranslucentWalter Schumann

Pumpellyite and Cuprite Optic Character

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

Pumpellyite and Cuprite Transparency

Similar to their colors, Pumpellyite and Cuprite 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, Pumpellyite is Gemmological Tables (2004) while Pumpellyite is Gemmological Tables (2004) in appearance.