Iolite 6mm Energy Prism - 15-16 Inch White Howlite Amazonite is a member of

Amazonite is a member of the feldspar family

Labradorite is usually gray-green

and was prized in ancient times for the ultramarine dye derived from it

It was used in the Egyptian Book of the Dead

It can even exhibit various colors within the same specimen

Iolite 6mm Energy Prism - 15-16 Inch White Howlite Amazonite is a member 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.