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Elbaite
Elbaite

Goethite
Goethite



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Elbaite
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Goethite

Elbaite and Goethite Optical Properties

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Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Pale green
VisibleArthur Thomas

Dispersion

0.020.05
0.005 1
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Transparency

Transparent
-

Refractive Index

1.614-1.6662.26-2.398
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.014-0.0320.138
0 0.296
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Clarity

Transparent
-

Elbaite and Goethite Optic Character

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

Elbaite and Goethite Transparency

Similar to their colors, Elbaite and Goethite 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, Elbaite is Transparent while Elbaite is Transparent in appearance.