Add some mystery to your designs with the Dakota Stones matte onyx 6mm faceted rondelle beads. Available in 8-inch strands, these beads gleam with inky black color. These beads feature a rounded shape with diamond-shaped facets all over their surface. This material has been rendered a uniform and permanent black color with a treatment by sugar and acid. This process has been used on the gemstone for thousands of years and is water safe. These beads are polished and then tumbled to achieve the matte finish. Mined in Brazil, India and Madagascar, onyx is said to enhance steadfastness and determination, setting one's mind to a task. Pair these beads with bright colors for a stunning contrast.