Lady Ice (1973)

aka: The Master

In Chicago, a gang of jewel thieves, led by the beautiful Paula Booth (Jennifer O’Neill), steals $3 million in diamonds. So insurance detective Andy Hammond (Donald Sutherland) sets out to capture the criminals and the goods. The trail leads to Miami, where Paula’s father (Patrick Magee), a dealer of “hot” gems, resides. But when Andy catches up with sexy Paula, diamonds aren’t the only things he desires. Also with Robert Duvall.

Wikipedia states, “George Lucas was offered the chance to direct, but he turned it down in favor of focusing on finding a studio for American Graffiti (1973).”