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Pumpellyite
Pumpellyite

Apache Tear
Apache Tear



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Pumpellyite
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Apache Tear

Pumpellyite and Apache Tear Optical Properties

Optical Properties

Luster

-
-

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.674-1.764-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.014-0.016-9999
0 0.296
👆🏻

Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
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Pumpellyite and Apache Tear Optic Character

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

Similar to their colors, Pumpellyite and Apache Tear 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 while Pumpellyite is in appearance.