CN means that the jewellery is created in China, Whilst the letter D means solitaire diamond, indicating that just one diamond is used in the ring. As a result, if a ring has N 925 Cn stamped on it, It is just a normal sterling silver ring produced in China. https://slorgacorhariini65320.blogacep.com/42214209/an-unbiased-view-of-jp88