Ghost Diver 1957

Ghost Diver (1957)
(info from Imdb)

Rico, a South American diver, seeking the lost treasure of the Paracas, finds a Paracan idol, with its eyes of sun and moon, and realizes he has found the key to a fortune. He tells Manco, the sweetheart of his daughter Pele, and the greedy Manco cuts the lifeline to Rico's diving gear and watches the old man sink to the ocean floor.
Directors: Richard Einfeld, Merrill G. White
Writers: Richard Einfeld (original screenplay), Merrill G. White (original screenplay)
Stars: James Craig, Audrey Totter, Nico Minardos