Princess Soraya of Iran, the second wife of Shah Mohammad Reza Pahlavi, wears an intricate diamond tiara in a portrait, ca. 1956; the tiara, which was later worn by other members of the imperial family, is now housed in the Central Bank in Tehran with the rest of the Iranian crown jewels

Farah Pahlavi, the former Empress of Iran, wears the Noor-ol-Ain Tiara in a portrait, ca. 1959; read more about the tiara over here!