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Prase
Prase

Eudialyte
Eudialyte



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Prase
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Eudialyte

Prase and Eudialyte Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak: O= colorless

Dispersion

0.010.01
0.005 1
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Transparency

Transparent, Translucent
Translucent

Refractive Index

1.544-1.5531.591-1.633
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.0090.003-0.010
0 0.296
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Clarity

Transparent
Translucent

Prase and Eudialyte Optic Character

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

Prase and Eudialyte Transparency

Similar to their colors, Prase 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, Prase is Transparent and Translucent while Prase is Transparent and Translucent in appearance.