Add a soft shade of black to your designs with the matte onyx 8mm large-hole round beads from Dakota Stones. Available by the strand, these gemstone beads will amaze and delight with their innovative design. Each bead features a wide stringing hole, perfect for using with thicker stringing materials like leather cord. In fact, these beads are temporarily strung on leather cord. These perfectly round beads feature a muted black color. This material has been rendered a uniform and permanent black color with a treatment by acid and sugar, a process that has been used for thousands of years and is water safe. These beads are polished and then tumbled to achieve the matte finish.