I was walking from town to the place where I had parked, and caught the glint of something on the ground. It turned out to be a lovely engagement ring set with diamonds and a sapphire, quite distinctive. I decided that I would take it to the police station, and set off again to collect my car. On the way I met the mother of my brother-in-law's fiancee, and showed her the ring. She was ecstatic as it turned out that this was her daughter's engagement ring, which she had lost earlier in the day and had been looking all over for.