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Elbaite
Elbaite

Sugilite
Sugilite



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Elbaite
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Sugilite

Elbaite and Sugilite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Pale green
Weak

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Translucent

Refractive Index

1.614-1.6661.607-1.612
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.014-0.0320.003
0 0.296
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Clarity

Transparent
Translucent

Elbaite and Sugilite Optic Character

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

Similar to their colors, Elbaite and Sugilite 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.