Wavy Oval Orange Sardonyx Beads - Large 29mmPrice is for per 15 inch string of these beautiful wavy beads ready for stringing. Each bead measures a large 29mm x 19mm x 6mm. About 13 beads to the string. No gemstone is more creatively striped by nature than agate, technically, chalcedony quartz that forms in concentric layers in a wide variety of colours and textures. Each individual agate forms by filling a cavity in its host rock, resulting in round nodules, with bands like the rings of a tree