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Pumpellyite
Pumpellyite

Eudialyte
Eudialyte



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Pumpellyite
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Eudialyte

Pumpellyite and Eudialyte Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak: O= colorless

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.674-1.7641.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.014-0.0160.003-0.010
0 0.296
👆🏻

Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
Translucent

Pumpellyite and Eudialyte Optic Character

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

Similar to their colors, Pumpellyite and Eudialyte 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.