Iolite 4mm Faceted Coin 15-16 Inch New Banded Rounds Ruby Zoisite occurs naturally when

Ruby Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite

Citrine is a transparent Quartz

It was used in the Egyptian Book of the Dead

It occurs with wave-like bands of charcoal gray

This prompted an alternative name for the gemstone: Princess Blue

Iolite 4mm Faceted Coin 15-16 Inch New Banded Rounds Ruby Zoisite occurs naturally whenIolite 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.