PD on a ring usually represents palladium. Your ring could possibly be palladium-plated if it has PD penned in excess of it. HK is actually a trademark that stands for Harriet Kelsall. They structure and provide jewelry all around the UK also to other spots also.  Country hallmarks: Some international locations https://johnnyymwis.articlesblogger.com/59361970/considerations-to-know-about-jp88