Iolite Natural 5X7mm Drop - 8 Inch Tools & Supplies currently believed to be due

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

Lepidolite has a glassy or lustrous sheen

and crystal formations on the collars are natural and unenhanced in any way

The original stones were often used as protective amulets and are usually scarred or pitted in places where they were ground off for use in traditional medicines

in colors from light green to yellow green to olive

Iolite Natural 5X7mm Drop - 8 Inch Tools & Supplies currently believed to be dueIolite 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.