Elbaite and Erythrite Optical Properties

Elbaite

Erythrite

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1 Optical Properties

1.1 Luster

Vitreous

Subadamantine, Pearly

1.2 Pleochroism

Pale green

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

Not Available

1.5 Refractive Index

1.614-1.6661.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

monoclinic

1.8 Birefringence

0.014-0.032Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Elbaite and Erythrite Optic Character

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

Similar to their colors, Elbaite and Erythrite 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.