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Goethite
Goethite

Eudialyte
Eudialyte



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Goethite
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Eudialyte

Goethite and Eudialyte Optical Properties

Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

VisibleArthur Thomas
Weak: O= colorless

Dispersion

0.050.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

2.26-2.3981.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.1380.003-0.010
0 0.296
👆🏻

Clarity

-
Translucent

Goethite and Eudialyte Optic Character

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

Goethite and Eudialyte Transparency

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