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Eudialyte
Eudialyte

Phenakite
Phenakite



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Eudialyte
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Phenakite

Eudialyte and Phenakite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak: O= colorless
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
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Transparency

Translucent
-

Refractive Index

1.591-1.6331.650-1.695
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.003-0.0100.016
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Eudialyte and Phenakite Optic Character

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

Eudialyte and Phenakite Transparency

Similar to their colors, Eudialyte and Phenakite 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, Eudialyte is Translucent while Eudialyte is Translucent in appearance.