TK316 is brief for TUSK Chrome steel, which indicated that your jewellery will stay stainless and you'll have no issues cleansing it. The meaning of “JP 88” can vary depending upon the jeweler, country of origin, and unique marking method applied. The entire sort of NVC is Nataliya V Collister, https://zanderogvmb.weblogco.com/37043007/about-jp88