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Forsterite
Forsterite

Elbaite
Elbaite



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Forsterite
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Elbaite

Forsterite and Elbaite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

colorless.
Pale green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.635-1.6711.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.033-0.0420.014-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Forsterite and Elbaite Optic Character

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

Forsterite and Elbaite Transparency

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