Let your looks be graced with enigmatic color using the Dakota Stones matte onyx 10x20mm double drilled beads. Available in 8-inch strands, these beads feature exquisite black color and a matte finish for a softer look. These beads feature a rectangular shape and two drilled stringing holes, making them perfect for use in watch bands. 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 with bright colors to create a cool contrast.