PD on a ring commonly represents palladium. Your ring may be palladium-plated if it has PD penned around it. HK is really a trademark that stands for Harriet Kelsall. They design and provide jewelry all around the UK and to other sites also.  Can “JP” also stand for a distinct https://onixcasper7732109.isblog.net/examine-this-report-on-jp88-54113030