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Elbaite and Gedrite Optical Properties


Gedrite and Elbaite Optical Properties


Optical Properties

Luster
Vitreous   
Fibrous, Vitreous   

Pleochroism
Pale green   
Weak to moderate   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent   
Transparent   

Refractive Index
1.614-1.666   
1.625-1.718   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma   

Birefringence
0.014-0.032   
Not Available   

Clarity
Transparent   
Transparent   

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Elbaite and Gedrite Optic Character

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

Similar to their colors, Elbaite and Gedrite 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.

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