TK316 is short for TUSK Stainless-steel, which indicated that the jewellery will continue to be stainless and you'll have no problems cleaning it. There is absolutely no difference between the markings S925 and 925; the two designate the product of jewellery is made from sterling silver of the highest quality. https://gregoryyacef.blogspothub.com/35921975/a-simple-key-for-jp88-unveiled