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Eudialyte
Eudialyte

Dioptase
Dioptase



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Eudialyte
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Dioptase

Eudialyte and Dioptase Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak: O= colorless
Weak; dark emerald green

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Translucent
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.591-1.6331.644-1.720
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.003-0.0100.051-0.053
0 0.296
👆🏻

Clarity

Translucent
TranslucentHerve Nicolas Lazzarelli

Eudialyte and Dioptase Optic Character

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

Similar to their colors, Eudialyte and Dioptase 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.