Arizona Wild Horse BIG 12mm Round beads, ONE 16 Inch Strand/32-34 Beads
The are perfect round beads, they do vary slightly in size, the smallest bead I measured in the whole lot of 20 strands was 11.9mm and the largest was 14.23mm
Wild Horse is the name given to this stone, whose geological name is magnesite which is a mixture magnesite/hematite. A fairly new stone that was discovered in the mid-90's near the Globe copper mine in the Gila wilderness area of southern Arizona.