Thin stainless steel ring composed of a braided ring and a round flat natural stone. Adjustable, the ring can be tightened or enlarged: from size 50 to 58 Ring height: 6 mm Thickness: 2 mm Guaranteed nickel-free, cadmium-free, and lead-free. Water resistant and does not blacken. ÉAs many natural stones, their colors may vary from one stone to another.