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Forsterite and Elbaite Optical Properties


Elbaite and Forsterite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
colorless.   
Pale green   

Dispersion
Not Available   
0.02   
22

Transparency
Transparent   
Transparent   

Refractive Index
1.635-1.671   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.033-0.042   
0.014-0.032   

Clarity
Transparent   
Transparent   

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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.

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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.

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