PD on a ring ordinarily represents palladium. Your ring can be palladium-plated if it has PD written above it. HK is really a trademark that means Harriet Kelsall. They layout and supply jewellery all over the United kingdom also to other locations as well.  The Solar refers to the hallmark https://slotonline44221.jaiblogs.com/63982818/jp88-can-be-fun-for-anyone