CN means that the jewelry is made in China, whereas the letter D stands for solitaire diamond, indicating that only one diamond is used in the ring. As a result, if a hoop has N 925 Cn stamped on it, This is a all-natural sterling silver ring built in China. https://dallasumcrg.blogadvize.com/44737616/5-tips-about-jp88-you-can-use-today