TK316 is short for TUSK Chrome steel, which indicated that the jewellery will stay stainless and you should have no difficulties cleaning it. The which means of “JP 88” will vary dependant upon the jeweler, place of origin, and particular marking process utilized. TK316 is short for TUSK Chrome steel, https://edwineoaku.eedblog.com/37071894/the-fact-about-jp88-that-no-one-is-suggesting