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In page Empress Crown:

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Following in the footsteps of policies initiated under the White Revolution that directed the further emancipation of Iranian women, Mohammad Reza Shah determined to make a symbolic gesture by crowning his consort, Empress Farah, during his own elaborate coronation ceremony in October 1967. Until that date, the wives of Persian monarchs had never been crowned since the Muslim conquest of Iran, so it was therefore necessary to design a new crown for the occasion. That honor was bestowed upon the French jewelers, Van Cleef & Arpels.[1]