Rolex Datejust 31 Yellow Rolesor — Champagne Diamond Dial | Ref. 278343 (2)

Reference 278343 represents the Datejust 31 in its most opulent Yellow Rolesor expression — the proprietary Rolex combination of Oystersteel and 18 ct yellow gold. The domed diamond bezel replaces the classic fluted or smooth bezel with a full setting of brilliant-cut diamonds, while the champagne dial is further enriched with diamond hour markers. This is a reference that balances everyday wearability with genuine jewellery-level appointments, a combination that defines Rolex's approach to the mid-size Datejust.

Powering the 31 mm Oyster case is the Calibre 2236, Rolex's self-winding movement built entirely in-house and beating at 28,800 vph. It incorporates the Syloxi silicon hairspring — entirely non-magnetic and highly resistant to temperature variation — alongside a 55-hour power reserve. The movement is protected within the screw-down Triplock crown and double-locking case back, rated waterproof to 100 metres. The bracelet is typically the five-link Jubilee in Yellow Rolesor, mirroring the mixed-metal palette of the case and contributing to the watch's refined wrist presence.

The 278343 with diamond bezel and champagne diamond dial occupies a sweet spot for collectors who want the iconic Datejust silhouette elevated into high-jewellery territory without stepping into the full Pearlmaster range. It appeals strongly to female collectors and gift buyers seeking a lasting piece. Retail demand for diamond-set mid-size Datejusts remains consistently high, and pre-owned examples with box and papers command meaningful premiums over bare watches.