Iolite 4x6mm Faceted Rondelle - 15-16 Inch Moroccan Agate It is considered a precious

It is considered a precious Opal

from pastel to bright to dark

The Madagascar agate has the ability to encourage positive thoughts

and in standard porcelain

Turquoise is an ancient gemstone

Iolite 4x6mm Faceted Rondelle - 15-16 Inch Moroccan Agate It is considered a preciousIolite 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.