Rolex Lady-Datejust 28 Yellow Gold — 44-Diamond Bezel, Mother-of-Pearl Diamond Dial | Ref. 279138RBR

Reference 279138RBR is a full-gold expression of the Lady-Datejust 28, combining 18-carat yellow gold throughout with a gem-set presentation of considerable splendour. The 28 mm Oyster case, with its screw-down Twinlock crown and 100-metre water resistance, is topped by a bezel mounted with 44 brilliant-cut diamonds in 18-carat yellow gold, the warm metal intensifying the fire of each stone. A scratch-resistant sapphire crystal with Cyclops lens and double anti-reflective coating sits above the dial, maintaining the clarity of the date display that has been a Datejust hallmark since 1945.

Beneath the crystal, a white mother-of-pearl dial provides the ground for diamond hour markers — a material pairing that exploits the iridescent qualities of nacre to extraordinary effect. Mother-of-pearl is unique among dial materials in responding differently to every angle of light and every spectral condition, producing a living, shifting depth that sets this reference apart from lacquered alternatives in the Lady-Datejust range. The diamond hour markers, individually set by Rolex's specialist craftsmen, add a second layer of brilliance without disrupting the organic quality of the pearl ground.

The Calibre 2236 provides the movement, its Syloxi silicon hairspring offering superior resistance to magnetism and temperature variation within a self-winding architecture beating at 28,800 vph with approximately 55 hours of power reserve. The instantaneous date change and stop-seconds function for precise setting round out the technical specification. The watch is presented on an 18-carat yellow gold Jubilee bracelet with five-piece links — a bracelet introduced alongside the Datejust in 1945, whose fine-link construction is particularly well suited to the 28 mm proportions of the Lady-Datejust.