Rolex Datejust Yellow Rolesor — Mother-of-Pearl Diamond Dial | Ref. 278243

Reference 278243 brings the Datejust 31 into Yellow Rolesor territory with one of Rolex's most timeless and luminous dial configurations: a mother-of-pearl base set with brilliant-cut diamond hour markers. The nacre dial shimmers with an inherent, shifting iridescence — no two pieces of mother-of-pearl are identical, ensuring that each watch carries a subtly unique visual character. Paired with the warmth of 18ct yellow gold at the bezel and bracelet centre links, the overall aesthetic is one of organic luxury, the natural beauty of the dial material harmonising with the crafted precision of the Rolesor construction.

The Calibre 2236 powers this reference — Rolex's current-generation self-winding movement for the Datejust 31, introduced with the 278xxx reference family. The 2236 features the proprietary Syloxi silicon hairspring, offering resistance to magnetic fields and temperature variation that conventional alloys cannot match. It achieves a certified rate of ±2 seconds per day with a 55-hour power reserve, representing a meaningful advancement over the 2235 it replaced. The Oyster case is water-resistant to 100 metres, the Jubilee bracelet completing the dressier overall presentation.

The mother-of-pearl diamond dial is among the most enduring and sought-after configurations in the Lady-Datejust and Datejust 31 lineage, appearing consistently across generations of references and retaining strong collector and retail demand. The 278243 as a current reference benefits from the upgraded 2236 movement while preserving the aesthetic language collectors have prized for decades. A quintessential Yellow Rolesor Datejust for those who want both natural beauty and horological substance.