Rolex Datejust 31 Yellow Gold — Silver Diamond Dial, Diamond Bezel | Ref. 278288RBR

Reference 278288RBR is the Datejust 31 in yellow gold with a factory diamond bezel and a silver dial set with diamond hour markers — a full-precious configuration that positions the 31 mm case as a statement jewellery watch rather than a subtle everyday timepiece. The Datejust 31 occupies a useful intermediate size between the 28 mm Lady-Datejust and the 36 mm unisex Datejust, making it an attractive choice for wearers who find 28 mm too discreet and 36 mm too substantial. Yellow gold with diamonds is a combination Rolex has refined over decades, and the 278288RBR reflects that accumulated expertise.

The RBR suffix denotes a factory-set diamond bezel, mounted by Rolex's specialist setters to standards that go well beyond typical aftermarket work. The silver dial carries individual diamond indices that catch light from multiple directions, ensuring the watch reads with brilliance even in lower-lit environments. Inside runs the Calibre 2236, Rolex's movement designed expressly for the mid-size Datejust cases. Its Syloxi silicon hairspring offers anti-magnetic properties and long-term stability without the need for conventional lubrication at the hairspring level.

Diamond-bezel yellow gold Datejust 31 references maintain consistent demand from buyers seeking a dress watch that communicates genuine luxury without crossing into full complication territory. The 31 mm size is particularly well-suited to cross-gender wearing and has attracted a growing audience of younger collectors. On the secondary market, factory-diamond examples in full yellow gold hold value meaningfully better than steel counterparts, and the presence of complete documentation and box papers further supports resale position.