TK316 is brief for TUSK Stainless Steel, which indicated that your jewelry will continue being stainless and you will have no issues cleaning it. SETA is an organization that offers vogue jewelry. Their jewellery generally provides a CZ plating above silver. CN means that the jewellery is created in China, https://slotonline58135.theblogfairy.com/36028876/indicators-on-jp88-you-should-know