Fernando Lamas and Arlene Dahl were still husband and wife at the time The Diamond Queen was filmed (the result of that union, of course, was little Lorenzo Lamas). Lamas plays Frenchman Jean Tavernier, who in the company of Baron de Cabannes (Gilbert Roland) journeys to India, there to search for a fabulous diamond on behalf of King Louis XIV. They not only find the gem, but also Maya (Arlene Dahl), Queen of Nepal, in the bargain. Now it is up to Tavernier, the Baron and Maya to escape the clutches of the Great Mogul (Sheldon Leonard), the film's all-purpose villain. One suspects that no one took this thing too seriously while it was being made, which only adds to the film's enjoyment. Produced independently, Diamond Queen was distributed by Warner Bros.
by Hal Erickson synopsis