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.
Beads>Grade A>Rainbow ObsidianBeadsGrade ARainbow ObsidianBlacksFlat Round/Coin20mmNaturalhttp://www.firemountaingems.com/itemdetails/h209204gsH209204GSBead, rainbow obsidian (natural), 20mm flat round, A grade, Mohs hardness 5 to 5-1/2. Sold per 16-inch strand.//image4.fmgstatic.com/images/p9204gsb.jpg72.9872.98As Low As $37.38 per strand