Martin Castillo , from Nuevo Laredo , Mexico , lost the ring in 2013 . The precious accessory was discovered by Daniel Roark , who picked it up a year later while scuba diving in the same Mexican resort . It is believed that the ring came to light because of an investigation into illegal immigration and human trafficking at the resort. Mrs Castillo 's cousin heard about the campaign and messaged Mr Roark to tell him that the ring belonged to her relatives .
Martin Castillo , from Nuevo Laredo , Mexico , lost the ring in 2013 . The precious accessory was discovered by Daniel Roark , who picked it up a year later while scuba diving in the same Mexican resort . Mr Roark , from Massachusetts , began a global Facebook campaign in the hopes of tracking down Mr Castillo and his wife Jessica . Mrs Castillo 's cousin heard about the campaign and messaged Mr Roark to tell him that the ring belonged to her relatives .