The Diamond Queen is a 1953 film directed by John Brahm. It stars Fernando Lamas and Arlene Dahl.
Jean volunteers to travel to India to bring back another worthy stone. Cabannes insists on coming along and complicates the journey more than once before saving Jeans life and earning his respect.The men are caught leering at a lovely woman bathing in a waterfall and are taken prisoner by her men. She is Queen Maya of Nepal. In the temple, Jean and Cabannes learn of the Eye of the Goddess, a rare blue diamond. It is in the possession of the Mogul of Golconda, who promises to give it to Queen Maya as a wedding gift, but secretly plans to take rule of her country. ........
Source: Wikipedia