Rolex Datejust 31 Everose Gold — Rose Roman Dial, Diamond Bezel | Ref. 278285RBR

Reference 278285RBR is the Datejust 31 in 18-carat Everose gold — Rolex's proprietary rose gold alloy engineered not to fade or tarnish over time — fitted with a full diamond bezel set with baguette and brilliant-cut stones, and a rose Roman numeral dial. The 'RBR' suffix denotes the rainbow baguette-set bezel, a high-jewellery configuration that represents the upper tier of Rolex's standard catalogue. President bracelet construction in Everose gold completes an entirely precious-metal composition that sits as close to the haute joaillerie tradition as any Rolex in regular production.

Inside sits Calibre 2236, Rolex's dedicated mid-size manufacture calibre. Its construction centres on the Syloxi silicon hairspring, which replaces traditional metallic hairsprings and their associated lubricants, offering better long-term accuracy and a 55-hour power reserve. The movement's 28,800 vph beat rate balances accuracy with energy efficiency. The President bracelet — Rolex's three-link design produced exclusively in precious metals — provides the wrist-fitting articulation and fully concealed Crownclasp clasp that define its luxurious character.

The 278285RBR occupies one of the highest price tiers in the non-Pearlmaster Datejust 31 range, and it appeals to a buyer for whom a watch is primarily a jewellery acquisition with horological credentials. On the secondary market, fully set diamond bezels in Everose gold are among the most liquid precious-metal Rolex references, particularly when accompanied by original papers. The piece demands pairing with formal attire, but its Rolex manufacture movement ensures it functions as precisely as any professional-line reference.