The Big Diamond Robbery (1929)
Genres: Western, Silent
Cast: Tom Mix, Kathryn McGuire
The Big Diamond Robbery is a 1929 American silent Western film directed by Eugene Forde and starring Tom Mix, Kathryn McGuire and Frank Beal. It was the last of five films Mix made for the FBO studios, and his last silent film. Unlike many of his westerns, it has a contemporary setting in 1920s Arizona.