Iolite 6x8mm Handcut Faceted Irregular Chip Bead - 15-16 Inch Shape_Round translucent stone

translucent stone

currently believed to be due to the presence of a copper-based mineral such as Malachite or Azurite

The name "biotite" is used because these minerals generally cannot be distinguished without optical

cachanance

Iolite 6x8mm Handcut Faceted Irregular Chip Bead - 15-16 Inch Shape_Round translucent stoneIolite 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.