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Brazilianite
Brazilianite

Eilat stone
Eilat stone



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Brazilianite
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Eilat stone

Brazilianite and Eilat stone Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Very weakWalter Schumann
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.602-1.625-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.019-0.021-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Brazilianite and Eilat stone Optic Character

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

Brazilianite and Eilat stone Transparency

Similar to their colors, Brazilianite and Eilat stone 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, Brazilianite is while Brazilianite is in appearance.