Rolex Datejust 31 White Rolesor — Mint Green Index Dial | Ref. 278240

Reference 278240 is a modern expression of the Datejust 31 in White Rolesor — Rolex's proprietary blend of Oystersteel and 18-carat white gold — featuring one of the brand's most coveted contemporary dial colours: mint green. Introduced as part of the current generation's expanded palette, the mint green dial with applied index hour markers has quickly earned a reputation as a collector's favourite, its refreshing hue sitting in rare and appealing contrast against the silver-toned case and bracelet.

The 31 mm Oyster case accommodates the Calibre 2236, a movement developed in-house specifically for mid-size Rolex models. It incorporates a Syloxi silicon hairspring — a proprietary innovation offering superior resistance to magnetism and temperature fluctuations compared to traditional Nivarox alloys — alongside a 55-hour power reserve. The date complication is displayed through the iconic Cyclops lens at 3 o'clock, magnifying the date 2.5 times for effortless legibility.

The 278240 in mint green has become one of the more discussed references in Rolex's current catalogue, particularly among a younger generation of enthusiasts drawn to its gender-fluid proportions and contemporary colour sensibility. The White Rolesor configuration adds visual sophistication without the price premium of a fully precious-metal case, and the Jubilee bracelet — standard on this reference — delivers exceptional wrist comfort. As a piece that bridges Rolex's horological heritage with modern aesthetic sensibilities, this Datejust 31 is exceptionally well positioned for long-term desirability.