Iolite 4mm Faceted Coin 15-16 Inch New Banded Rounds The blue color

The blue color

and has been discovered with artifacts from cultures of the Neolithic Period

a green-colored mineral

Citrine is a transparent Quartz

This prompted an alternative name for the gemstone: Princess Blue

Iolite 4mm Faceted Coin 15-16 Inch New Banded Rounds The blue colorIolite most commonly occurs in shades of blue 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.