Natural Obsidian Stone Beaded Elastic Bracelet, 6.7" (17cm) Gemstones may have been treated to improve their appearance or durability and may require special care. Type of stone Obsidian (Obsidian) Length 6.7 inch ( 17 cm ) The natural properties and composition of mined gemstones define the unique beauty of each piece. The image may show slight differences to the actual stone in color and texture