PD on a ring normally signifies palladium. Your ring could possibly be palladium-plated if it's PD penned over it. HK can be a trademark that means Harriet Kelsall. They structure and supply jewellery all around the British isles also to other places also.  Place hallmarks: Some nations have their particular hallmarking https://casper77-ialah-situs-slot77776.ttblogs.com/16778682/how-much-you-need-to-expect-you-ll-pay-for-a-good-jp88