12 mm flat round oregon blue opal beads

These beads are unusual and lovely. They are black and blue swirled together in each bead. The beads are a pillow flat round and are 6 mm in the center. They are shiny and the black areas have spots of even darker black. So there is a lot of color going on in these beads. Each strand is 16 inches long and contains approximately 32 beads.