PD on a ring normally represents palladium. Your ring could be palladium-plated if it's PD prepared in excess of it. TK316 is short for TUSK Stainless Steel, which indicated that the jewellery will continue to be stainless and you will have no difficulty cleansing it. Halo can be a stone https://23naga86318.iyublog.com/35960224/jp88-fundamentals-explained