Iolite 4mm Round A Grade - 15-16 Inch Large Hole Restock A Manganese inosilicate (or chain

A Manganese inosilicate (or chain silicate)

tourmaline and other minerals

Red Brecciated Jasper is typically found in deep red

Azurite often occurs with green Malachite

Cubic Zirconia can be truly colorless

Iolite 4mm Round A Grade - 15-16 Inch Large Hole Restock A Manganese inosilicate (or chainIolite 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.