Silver and gold pendants marked <3TK

I bought these two together and some other stuff at a table with a small jewelry section for 3.25 euros. Well, the gold one actually lay in the junk box, among loose screws and to me unidentifiable plastic bits. The gold one is marked 585 and the silver one 925, and both have a maker's mark that reads "TK" with a heart in front of it. I do not know whom this curious mark belongs to.