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Cordierite
Cordierite

Eudialyte
Eudialyte



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X
Cordierite
X
Eudialyte

Cordierite and Eudialyte Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

X = pale yellow
Weak: O= colorless

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

-99991.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

-99990.003-0.010
0 0.296
👆🏻

Clarity

-
Translucent

Cordierite and Eudialyte Optic Character

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

Cordierite and Eudialyte Transparency

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