This is an authentic Cartier Trinity ring. There is no box, etc., but it was purchased at a shop in Tokyo. I can't take pictures with my smartphone to show the engravings, etc., but they are definitely there. It is 18k gold and the size is 56. Due to the design, there are some small scratches on the overlapping parts. I think it will be beautiful if you take it to be polished. Thank you for looking.