Iolite 6mm Energy Prism - 15-16 Inch White Howlite It can even exhibit various

It can even exhibit various colors within the same specimen

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

Labradorite is remarkable for the way its aggregate layers refract light

The holes in these beads are straight

Labradorite is usually gray-green

Iolite 6mm Energy Prism - 15-16 Inch White Howlite It can even exhibit variousIolite 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.