Once upon a time, etiquette frowned upon women wearing watches with a ball gown so some watchmakers designed secret watches for them: jewellery masterpieces to conceal time beneath glittering finery. Breguet has breathed new life into this tradition with a resplendent rose inspired by a 1793 portrait of Marie-Antoinette in which the queen holds a blossoming flower tied with a bow. This rose has been delicately hand-sculpted in white cameo whilst the ribbon dazzles like a river of diamonds. Press the queen of flowers to unveil a sparkling dial with two openwork blue-tone Breguet hands. The time functions are brought to life by a self-winding 586 calibre nestled in the white gold case. There are 432 brilliant-cut diamonds on the bow and 116 on the dial. Price: 110,000CHF