CN ensures that the jewelry is manufactured in China, whereas the letter D stands for solitaire diamond, indicating that only one diamond is Utilized in the ring. For that reason, if a ring has N 925 Cn stamped on it, it is a pure sterling silver ring manufactured in China. https://josuexlwfo.thechapblog.com/35886195/helping-the-others-realize-the-advantages-of-jp88