Rolex Datejust 31 Everose Rolesor — 24-Diamond Bezel Rose Index Dial | Ref. 278341RBR

Reference 278341RBR sits within the Datejust 31 family — a size that bridges the Lady-Datejust 28 and the full 36 mm Datejust — and announces itself through the Everose Rolesor combination: a steel case and bracelet enriched by 18 ct Everose gold crown, bezel setting, and centre links. The 'RBR' suffix confirms a factory diamond-set bezel, here comprising 24 brilliant-cut stones that frame the dial with consistent precision.

Calibre 2236 drives this reference, a manufacture movement developed specifically for Rolex's mid-size and smaller watches. Its Syloxi hairspring — machined from silicon — provides superior isochronism and resistance to magnetic fields compared to traditional alloy alternatives. The rose-indexed dial complements the Everose gold tones throughout the watch, with applied hour markers catching light at varying angles. Water resistance to 100 metres via the Twinlock crown system ensures the Oyster case lives up to its technical credentials despite the dressy presentation.

The 278341RBR occupies a sweet spot in the market: large enough for contemporary tastes, compact enough for smaller wrists, and adorned to a degree that signals occasion wear without full gem-setting excess. Factory diamond bezels carry a premium over aftermarket equivalents, making original RBR references consistently desirable among buyers who want guaranteed Rolex provenance for set stones. This is a reference that performs across both formal and smart-casual contexts.