Ulysse Nardin Marine Chronometer Lady Rose Gold — Mother-of-Pearl Diamond Dial | Ref. 1182-160C-3C/490

In 39mm 18K rose gold (5N) set with 160 diamonds in the case, 57 diamonds in the dial, and 74 diamonds in the rubber strap's rose gold element, the Ulysse Nardin Marine Chronometer Lady is a jewellery-watch synthesis executed at the level of a grand complication piece. The white mother-of-pearl dial — selected and prepared individually for each watch, its organic iridescence shifting across the visible spectrum as the angle of light changes — is the piece's visual centrepiece: a natural material whose oceanic provenance connects directly to the Marine collection's founding identity as a line of instruments born from Ulysse Nardin's 1846 appointment as chronometer supplier to the world's naval observatories.

Caliber UN-118 is the movement of record, and its specification here belies the watch's jewellery presentation: COSC-grade chronometric performance embedded in a self-winding architecture with a 60-hour power reserve, silicon escapement technology providing lubrication-free operation across the full service interval, an oversized seconds hand referencing the precision display conventions of the brand's 19th-century marine chronometers, and a power reserve indicator giving the wearer a permanent read of remaining movement autonomy. The screw-down security crown provides a waterproof seal to 100 metres — a remarkable water resistance rating for a watch set with diamonds throughout its case and strap architecture.

The 5N rose gold case alloy — warmer and more distinctly red-toned than standard 18K gold — provides the metal foundation for the diamond setting in a combination that balances precious-metal warmth with the cool fire of the stones. The rubber strap with its rose gold and diamond-set element is a statement of materials intelligence: the rubber's practical advantages — compliance, security, salt-water resistance — combined with a rose gold and diamond ornament that transforms a functional component into a jewellery element in its own right. For the collector who requires both haute horlogerie mechanical content and jewellery-level visual presence in a single object, this Marine Chronometer Lady is a rare achievement of genuine synthesis.