Give sheen elegance to your designs with this designer-quality Rainbow Obsidian. This bead features a classic round shape. Rainbow Obsidian is a type of black obsidian that reveals lustrous layers when exposed to strong, bright light. It is a lightweight volcanic glass with an iridescent finish, giving it a subtle cat's eye glow in the sunlight. Microscopic crystals and bubbles of mica in the volcanic glass create the multicolored effect. Rainbow Obsidian is a highly grounding and protective stone. When you feel trouble in your life and you don’t know which direction to take, Rainbow Obsidian helps you in guiding the right direction. This 4mm bead has a hole size of 0.7-0.9mm which is centrally drilled.