Iolite 5x8mm Rondelle Faceted - 15-16 Inch Mica Obsidian is produced when lava

Obsidian is produced when lava erupts from a volcano and cools rapidly with minimal crystal growth

a phenomenon that occurs when light hits the chips of silica inside the gemstone and a rainbow of different colors refract inside the stone

the inclusions appear more golden or copper

veins and brecciated patterns

Chakra: Throat

Iolite 5x8mm Rondelle Faceted - 15-16 Inch Mica Obsidian is produced when lavaIolite 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.