Thank you for your interest in the product! [Product] This is a bracelet with three types of power stones! Rutile Quartz: A stone with golden needle-like crystals (rutile) visible inside transparent or translucent beads. It is said to enhance financial luck and career luck, and to support the achievement of goals. Bead diameter: 1.4cm Black Onyx: A glossy black stone, believed to ward off evil and bad luck. The bluish stone is unknown, but it appears to be artificial, like glass beads. [Size] Approximately 15cm in circumference. Please note that it does not stretch.