CN signifies that the jewellery is made in China, Whilst the letter D means solitaire diamond, indicating that just one diamond is Employed in the ring. For that reason, if a ring has N 925 Cn stamped on it, It is just a organic sterling silver ring made in China. https://casper7722110.fireblogz.com/68115375/the-fact-about-jp88-that-no-one-is-suggesting