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Pearl
Pearl

Eudialyte
Eudialyte



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Pearl
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Eudialyte

Pearl and Eudialyte Optical Properties

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Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
Weak: O= colorless

Dispersion

0.030.01
0.005 1
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Transparency

Translucent, Opaque
Translucent

Refractive Index

1.52-1.661.591-1.633
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.1560.003-0.010
0 0.296
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Clarity

Translucent
Translucent

Pearl and Eudialyte Optic Character

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

Pearl and Eudialyte Transparency

Similar to their colors, Pearl 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, Pearl is Translucent and Opaque while Pearl is Translucent and Opaque in appearance.