Iolite 4x6mm Faceted Rondelle - 15-16 Inch Moroccan Agate and in standard porcelain

and in standard porcelain

It is considered a precious Opal

all-knowing eye

A natural blue form of calcium sulfate

Turritella Agate’s rich brown and black colors are patterned with the fossilized remains of sea creatures millions of years old

Iolite 4x6mm Faceted Rondelle - 15-16 Inch Moroccan Agate and in standard porcelainIolite 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.