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Biotite was named in honor of the French physicist Jean-Baptiste Biot
As a Serpenti
calcium and aluminum with trace amounts of iron
and is similar to Mahogany
Originally discovered in the 1940’s and not introduced commercially until 1978
Bloody Iolite 2.5mm Banded Table Cut Cube Bead - 15-16 Inch hps_09142023 Biotite was named in honorIolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called pleochroism, which means that it can appear to be different colors as it shifts in the light. According to Norse legend, Viking explorers used thin pieces of Iolite as the worlds first polarizing lens to help them determine the exact location of the sun for navigation.
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