10mm matte black agate and white agate rondelles with sterling silver focal bead Agate cleanses and stabilizes the aura, eliminating and transforming negativity. It also enhances mental function, improving concentration, perception and analytical abilities. It soothes and calms, healing inner anger or tension and creates a sense of security and safety. Fits up to 7 1/2 inch wrist. Free custom sizing available *If you would like a complementing bracelet, check out the matte howlite bracelet also listed in shop. See 2nd picture.