Rainbow obsidian is a lightweight volcanic glass with iridescent properties, giving it a subtle cat's eye glow in sunlight. Every movement reveals a subtle sheen, with muted rainbow colors moving on the stone. Microscopic crystals and bubbles of mica in the volcanic glass create the multicolored effect. Machine-cut, drilled and polished for a consistent size and shape.
Beads>Grade A>Rainbow ObsidianBeadsGrade ARainbow ObsidianBlacksFlat Round/Coin14mmNaturalhttp://www.firemountaingems.com/itemdetails/h201966geH201966GEBead, rainbow obsidian (natural), 14mm flat round, A- grade, Mohs hardness 5 to 5-1/2. Sold per 8-inch strand.//image1.fmgstatic.com/images/p1966geb(2).jpg25.6425.64As Low As $13.07 per strand