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Selenite
Selenite

Eudialyte
Eudialyte



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Selenite
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Eudialyte

Selenite and Eudialyte Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Weak: O= colorless

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

-99991.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

-99990.003-0.010
0 0.296
👆🏻

Clarity

Transparent
Translucent

Selenite and Eudialyte Optic Character

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

Selenite and Eudialyte Transparency

Similar to their colors, Selenite 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, Selenite is Transparent while Selenite is Transparent in appearance.