Bead, rainbow obsidian (natural), 25mm flat round, A- grade, Mohs hardness 5 to 5-1/2. Sold per 8-inch strand.
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Item Number: H20-1968GE
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.
H20-1968GE>>http://www.firemountaingems.com/itemdetails/h201968geH201968GEBead, rainbow obsidian (natural), 25mm flat round, A- grade, Mohs hardness 5 to 5-1/2. Sold per 8-inch strand.//image3.fmgstatic.com/images/p1968geb(2).jpg45.2145.21As Low As $22.69 per strand