Any ring With all the STS stamp on it signifies that it was produced by an STS Jewelry enterprise, which has its headquarters in Austin, Texas. 925 is an indication for sterling silver. TK316 is short for TUSK Stainless Steel, which indicated that the jewelry will keep on being stainless https://mariotclvd.blogitright.com/37149710/jp88-things-to-know-before-you-buy