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 B>Rainbow ObsidianBeadsGrade BRainbow ObsidianBlacksBall8mmNaturalhttp://www.firemountaingems.com/itemdetails/h208966gsH208966GSBead, rainbow obsidian (natural), 8mm round, B grade, Mohs hardness 5 to 5-1/2. Sold per 15-1/2" to 16" strand.//image1.fmgstatic.com/images/p8966gsb.jpg16.2816.28As Low As $8.49 per strand