Iolite 7x8mm Faceted Round Nugget - 15-16 Inch 20210727 With the possible exception of

With the possible exception of the horizon meeting the bright blue sky on a perfect summer day

rich greens

It is one of the most rare and sought after forms of Agate

It was named from the Latin "Thule" - which was a term used by ancient Greeks and Romans to refer to the then-little-known lands to the north or present day Scandinavia

As the stone catches the light

Iolite 7x8mm Faceted Round Nugget - 15-16 Inch 20210727 With the possible exception ofIolite 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.