CN means that the jewelry is created in China, whereas the letter D stands for solitaire diamond, indicating that just one diamond is used in the ring. S925 ALE 54 refers to a global typical for sterling silver jewellery, where ALE is short for Algot Enevoldsen, the father of PANDORA, https://beaugygnv.shoutmyblog.com/35891389/not-known-factual-statements-about-jp88