PD on a ring ordinarily represents palladium. Your ring can be palladium-plated if it has PD prepared over it. HK is a trademark that means Harriet Kelsall. They layout and supply jewellery all around the British isles and to other areas likewise.  Can “JP” also stand for a special place? https://sergiofsctb.blogdemls.com/36939075/5-simple-techniques-for-jp88