PD on a hoop normally signifies palladium. Your ring can be palladium-plated if it's PD written above it. HK is really a trademark that means Harriet Kelsall. They layout and supply jewellery all over the UK and also to other places likewise.  Can “JP” also stand for another country? Although https://forexhkfutures92346.blogitright.com/37236949/not-known-details-about-jp88