Rolex Datejust 31 Everose Rolesor — Rose Diamond Dial | Ref. 278241

Reference 278241 in Everose Rolesor occupies a considered position within the Datejust 31 range, combining the proprietary rose-gold alloy that Rolex developed for longevity of colour with the structural durability of Oystersteel. Everose gold, unlike conventional 18 ct rose gold alloys, contains a trace quantity of platinum as a stabilising agent — a formulation that prevents the copper component from oxidising and causing the alloy to pale over years of wear. The result is a metal whose warmth of hue is guaranteed to outlast the wearer's ownership rather than requiring periodic restoration.

The rose diamond dial introduces a complementary gem vocabulary: individual diamonds set at each hour position against a rose-toned dial ground, the warm colour harmony between the Everose case metal and the dial background creating a composition in which every element reinforces rather than competes with its neighbours. The domed bezel in smooth Everose gold frames the dial without the visual complexity of a fluted configuration, a choice that allows the gem-setting on the dial to carry the full decorative weight of the specification. The Oyster bracelet in Everose Rolesor — alternating steel and gold centre links — provides wrist comfort and a considered continuity of material.

Calibre 2236 is the movement appropriate to the 278241's 31 mm case diameter, developed specifically by Rolex to occupy the dimensional constraints of the mid-size Datejust. Its defining technical feature is the Syloxi hairspring: a silicon balance spring formed through photolithographic etching rather than conventional metallurgical drawing, providing a geometry that is inherently isochronous and resistant to both magnetic interference and temperature-induced modulus variation. At 55 hours, the power reserve is shorter than the larger Calibre 3235 by 15 hours, but the precision specifications are equivalent — both movements carry Superlative Chronometer certification.