Rolex Datejust 31 Yellow Rolesor — Dark Grey Diamond Dial | Ref. 278243

Yellow Rolesor — Rolex's proprietary combination of Oystersteel and 18 ct yellow gold — gives the 31 mm Datejust ref. 278243 a warm, two-tone elegance that has been a signature of the collection since the 1940s. This particular example pairs that iconic material combination with a dark grey dial set with diamond hour markers, creating a compelling interplay of contrasting tones: the cool depth of the dial offset by the sunlit warmth of the gold elements. The result is a watch that reads as both contemporary and deeply traditional.

At 31 mm, this Datejust occupies the mid-size position that suits a wide range of wrist profiles. The ref. 278xxx designation confirms this as a current-generation model, housing Calibre 2236 — Rolex's dedicated ladies' and mid-size movement featuring a Syloxi silicon hairspring for superior resistance to magnetic fields and temperature variations, along with a 55-hour power reserve. The bezel is set with diamonds in the fluted pattern, executed in yellow gold, while the Jubilee bracelet in matching Rolesor completes the refined aesthetic. The dial's diamond hour markers are hand-set at Rolex's Geneva workshops.

The Datejust 31 in Yellow Rolesor with a diamond dial occupies an attractive position in the market: more accessible than full precious metal references, yet substantially more luxurious than an all-steel configuration. Diamond-set dials add genuine horological craftsmanship and enhance collectability. For buyers seeking a versatile mid-size watch with lasting appeal and jewellery-grade finishing, ref. 278243 delivers on every count.