Rolex Datejust 31 Everose Rolesor — Rose Index Dial with 46-Diamond Bezel | Ref. 278381RBR

Among the most jewellery-forward expressions in the Datejust 31 collection, reference 278381RBR occupies a distinct position at the intersection of haute horology and fine gem-setting. The designation 'RBR' signals a factory-set diamond bezel containing 46 brilliant-cut stones, framing the dial in continuous scintillation. Everose Rolesor — Rolex's proprietary 18 ct Everose gold and Oystersteel combination — gives the case its warm, two-tone character, a material pairing that has remained stable in colour over decades due to the gold alloy's platinum content.

Powering the watch is Calibre 2236, Rolex's in-house movement developed specifically for the 31 mm and Lady-Datejust 28 mm families. It incorporates a Syloxi hairspring in silicon, offering exceptional resistance to magnetic fields and temperature variation, alongside a 55-hour power reserve. The rose index dial, set against the warm gold and steel case, presents applied hour markers framed in Everose gold, coordinating precisely with the bezel's gem-set halo. The Jubilee bracelet, historically associated with the Datejust since 1945, completes the presentation in five-piece link construction.

For the collector, the 278381RBR represents factory gem-setting at its most refined without crossing into full Pearlmaster territory. Diamond bezels fitted directly by Rolex carry provenance and consistency that aftermarket stone-setting cannot replicate, making these references reliably desirable on the secondary market. This reference suits the buyer who demands both mechanical integrity and aesthetic opulence in a wearable 31 mm format.