If you were at the casino at the time, don’t expect to materialize in the movie’s background the Sun’s security team redirected guests away from areas where filming was taking place. “Uncut Gems” shot at Mohegan Sun over the course of a half-dozen days, in November 2018 and April 2019. Doesn’t that look like the Wolf Den flashing by in the background? Indeed. So movie viewers see Julia, played by newcomer Julia Fox, land at the Sun, race through the casino, place the bet, and hang out in a hotel suite waiting as the basketball game is played. Not only do the characters mention Mohegan Sun by name in “Uncut Gems,” but the scenes set at the Sun were, in fact, filmed there. Julia takes the money and hops in a helicopter that brings her to … Mohegan Sun. It’s a pivotal point in the drama, when Ratner thinks he can win big and pay off past debts. Climactic scenes in ‘Uncut Gems’ were filmed at Mohegan SunĪs the acclaimed movie “Uncut Gems” revs toward its nerve-jangling finale, Adam Sandler’s character, Howard Ratner, gives his mistress Julia a bag of cash and tells her to wager on a Celtics game.