A friend paid his bus fare with his wedding ring once. He had been tarting up his doo and put his ring in his back pocket while applying some oily product. The exact change for the bus was in the same pocket. When he got on the bus he pulled out the contents of the pocket and watched his treasured ring go into the hopper.
First Bus brought it back to his work the following day and he appeared in a number of trashy papers as a human interest story.
I don't have a wedding ring so no worries there.