CN means that the jewelry is manufactured in China, whereas the letter D stands for solitaire diamond, indicating that only one diamond is used in the ring. Thus, if a ring has N 925 Cn stamped on it, It's really a normal sterling silver ring produced in China. CCD on https://casper77mauraihuntungdari16924.get-blogging.com/37399170/the-2-minute-rule-for-jp88