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Elbaite and Beryllonite Optical Properties


Beryllonite and Elbaite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Adamantine, Pearly   

Pleochroism
Pale green   
AbsentWalter Schumann   

Dispersion
0.02   
22
0.01   
29

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.614-1.666   
1.552-1.562   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
monoclinic   

Birefringence
0.014-0.032   
0.009   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Elbaite and Beryllonite Optic Character

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

Similar to their colors, Elbaite and Beryllonite 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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