Rolex Datejust 31 Yellow Rolesor — Grey Roman Dial, 24-Diamond Bezel | Ref. 178343

Reference 178343 represents the Datejust 31 at its most refined — a mid-size expression of Rolex's flagship dress watch that blends Yellow Rolesor construction with elaborate diamond setting. The 24-diamond bezel and grey Roman dial place this reference firmly in luxury jewellery-watch territory, appealing to collectors who seek something more opulent than the standard Datejust without crossing into full precious-metal territory.

Powered by Calibre 2235, an automatic movement manufactured entirely in-house, the 178343 delivers COSC-certified chronometric precision within a 31 mm Oyster case. Yellow Rolesor — Rolex's proprietary combination of 904L stainless steel and 18 ct yellow gold — is applied to the crown, bezel, and bracelet centre links, creating a warm two-tone aesthetic. The grey sunray dial carries applied Roman hour markers and houses a date window at 3 o'clock with Rolex's signature Cyclops magnification lens.

For the collector, the 178343 occupies an important niche: it delivers full diamond-bezel presence in a size comfortable for smaller wrists, with the long-term reliability of an Oyster case and Jubilee bracelet. Pre-owned examples in strong condition retain value well, aided by the enduring desirability of Yellow Rolesor across generations of buyers. This reference suits those entering the diamond Datejust segment without committing to a full gold model.