Was able to help these nice folks out. The fellow had taken off his ring to apply lotion. When it came time to put the ring back on, it was gone. Obscured in the sand somewhere in the vicinity of their picnic site. Another happy reunion. 
Done several returns via RingFinders. Here’s the first example hunt . This will be the first I’ve gotten onto the success story “smiles” page here. Got a call from “Nick”, who lost his wedding ring on a Monterey, CA beach. Happy to be able to help. Fun to put the hobby to good use.
Hi, my name is Tom . I joined the Ringfinders to help folks find their lost jewelry & items. If you’ve lost something where a metal detector might be helpful (terra firma, sand, etc…) & need help, contact me. I will do my best to help you find what was lost. I love any excuse to get out and hunt.