Iolite 6mm Tear Drop Faceted - 15-16 Inch A-GradeBanded although the colors are much

although the colors are much more muted

Rhyolite or Tuff

This Lapis has been treated to enhance the blue color

although sometimes mistaken for Jasper

When this combination crystallized

Iolite 6mm Tear Drop Faceted - 15-16 Inch A-GradeBanded although the colors are muchIolite 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.