PD on a hoop normally represents palladium. Your ring may be palladium-plated if it's got PD composed around it. HK is usually a trademark that stands for Harriet Kelsall. They design and style and provide jewelry everywhere in the UK and also to other spots too.  Can “JP” also stand https://jaredvmxju.get-blogging.com/37585619/everything-about-jp88