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Pumpellyite
Pumpellyite

Purpurite
Purpurite



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Pumpellyite
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Purpurite

Pumpellyite and Purpurite Optical Properties

1 Optical Properties
1.1 Luster
Fibrous
Not Available
1.2 Pleochroism
Not Available
StrongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.674-1.7641.85-1.92
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.014-0.0160.070
Achroite
0 0.296
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
TranslucentWalter Schumann

Pumpellyite and Purpurite Optic Character

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

Similar to their colors, Pumpellyite and Purpurite 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.