Stainless steel ring made up of 2 square natural stones. Adjustable, the ring can be tightened or enlarged: from size 50 to 58 Ring height: 10 mm Ring thickness: 1 - 4 mm Natural stone dimensions: 10 x 10 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.