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Pumpellyite and Ammolite Optical Properties


Ammolite and Pumpellyite Optical Properties


Optical Properties

Luster
Fibrous   
Silky, Vitreous   

Pleochroism
Not Available   
None   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Not Available   

Refractive Index
1.674-1.764   
1.520-1.670   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Trigonal   

Birefringence
0.014-0.016   
0.135-0.145   

Clarity
OpaqueUlrich Henn and Claudio C. Milisenda   
Not Available   

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Pumpellyite and Ammolite Optic Character

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

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Pumpellyite and Ammolite Transparency

Similar to their colors, Pumpellyite and Ammolite 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.

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