Give your designs a dramatic twist with the Dakota Stones matte onyx 7x12mm faceted nugget beads. Available in 8-inch strands, these beads feature dark black color and a matte finish with a subtle gleam. These beads feature a rocky nugget shape created from the cut facets. This material has been rendered a uniform and permanent black color with a treatment of 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. Use these beads as chunky accents in between more colorful beads.