Iolite with Flash 10mm Round - 15-16 Inch - CLEARANCE Gem Silica but truly unique

but truly unique

The different colored zones in the stone result from different oxidation states of iron

Its color is due to the presence of Manganese and Iron in the stone

or golden-yellow color of the mineral beryl

According to Norse legend

Iolite with Flash 10mm Round - 15-16 Inch - CLEARANCE Gem Silica but truly uniqueIolite 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.