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Pumpellyite
Pumpellyite

Apophyllite
Apophyllite



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Pumpellyite
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Apophyllite

Pumpellyite and Apophyllite Optical Properties

1 Optical Properties
1.1 Luster
Fibrous
Vitreous, Pearly
1.2 Pleochroism
Not Available
Dichroic (colorless)
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
1.5 Refractive Index
1.674-1.764
1.530-1.543
1.6 Optic Character
Not Available
Uniaxial/-
1.7 Crystal System
monoclinic
tetragonal
1.8 Birefringence
0.014-0.016
0.000-0.003
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Transparent

Pumpellyite and Apophyllite Optic Character

Pumpellyite and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Pumpellyite and Apophyllite 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 Apophyllite 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. Apophyllite has Uniaxial/- character.

Pumpellyite and Apophyllite Transparency

Similar to their colors, Pumpellyite and Apophyllite 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.