Bead, rainbow obsidian (natural), 20mm flat round, B grade, Mohs hardness 5 to 5-1/2. Sold per 16-inch strand.
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Item Number: D01-8250GS
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.
D01-8250GS>>http://www.firemountaingems.com/itemdetails/d018250gsD018250GSBead, rainbow obsidian (natural), 20mm flat round, B grade, Mohs hardness 5 to 5-1/2. Sold per 16-inch strand.//image4.fmgstatic.com/images/p8250gsb.jpg65.4765.47As Low As $34.02 per strand