TK316 is short for TUSK Chrome steel, which indicated that your jewelry will continue being stainless and you should have no trouble cleaning it. The which means of “JP 88” can differ dependant upon the jeweler, nation of origin, and particular marking technique utilized. TK316 is short for TUSK Stainless-steel, https://judahbthkq.blogdal.com/37448725/jp88-for-dummies