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Friedelite
Friedelite

Eudialyte
Eudialyte



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Friedelite
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Eudialyte

Friedelite and Eudialyte Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak: O= colorless

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

Translucent
Translucent

Refractive Index

1.627-1.6631.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Trigonal

Birefringence

0.032-0.0350.003-0.010
0 0.296
👆🏻

Clarity

Translucent
Translucent

Friedelite and Eudialyte Optic Character

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

Friedelite and Eudialyte Transparency

Similar to their colors, Friedelite 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, Friedelite is Translucent while Friedelite is Translucent in appearance.