Iolite 10mm Faceted Round - 15-16 Inch - CLEARANCE 1228202148hr Emerald and Heliodore -- and

Emerald and Heliodore -- and is often cut to highlight its chatoyant qualities

everything from colorless to black

In this strand

it is a relative newcomer to the gem market

This prompted an alternative name for the gemstone: Princess Blue

Iolite 10mm Faceted Round - 15-16 Inch - CLEARANCE 1228202148hr Emerald and Heliodore -- andIolite 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.