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Poudretteite
Poudretteite

Eudialyte
Eudialyte



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Poudretteite
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Eudialyte

Poudretteite and Eudialyte Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Colorless
Weak: O= colorless

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.511-1.5321.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

0.0210.003-0.010
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Poudretteite and Eudialyte Optic Character

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

Poudretteite and Eudialyte Transparency

Similar to their colors, Poudretteite 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, Poudretteite is while Poudretteite is in appearance.