Photo: Francesca Teal A Massachusetts woman’s diamond wedding ring, a family heirloom, is back on her finger after a man with a metal detector responded to her plea for help on social media and found it at the bottom of the ocean. Francesca Teal told The Boston Globe that she was throwing a football with her husband this month at North Beach in Hampton, New Hampshire, when the ring that once belonged to her great-grandmother slipped off her finger. They were unable to find the ring in the water after hours of searching, said the 29-year-old from Groveland. Teal posted about the ordeal on Facebook and asked anyone who might frequent the beach with a metal detector to be on the lookout. Her post was shared thousands of times and caught the attention of a man named Lou Asci. Asci, 60, of Marshfield, donned a wetsuit and headlamp and waded into the water looking for the ring with his metal detector. The first two days he went looking, he had no luck. “I don’t deal with failure very well,” Asci told the paper. “I wanted to go back and give him one last chance.” That’s when he found the ring buried under the sandy ocean floor, he said. She sent Teal a photo, writing in one message: “Tell me this is the ring so I can finally get off this beach.” Asci returned the ring to Teal’s house and her husband knelt down to put it back on her finger. “I have been so overwhelmed by the kindness of strangers this past week,” Teal wrote on Facebook. “It was so amazing to watch humanity in such a positive way and it has brought so much faith in myself and others.”