Iolite 4x6mm Faceted Rondelle - 15-16 Inch R0471 Green Goldstone is an opaque

Green Goldstone is an opaque

Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors

intricate patterns of minute black flecks

Though it is widely known to be untrue

Peridot is one of few stones that occurs naturally in only one color

Iolite 4x6mm Faceted Rondelle - 15-16 Inch R0471 Green Goldstone is an opaqueIolite 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.