TK316 is short for TUSK Chrome steel, which indicated that your jewellery will continue to be stainless and you will have no issues cleaning it. The indicating of “JP 88” can vary dependant upon the jeweler, nation of origin, and precise marking method applied. TK316 is short for TUSK Stainless-steel, https://collineqalv.blogoxo.com/37159288/the-fact-about-jp88-that-no-one-is-suggesting