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

Reference 178343 represents the Datejust 31 in Yellow Rolesor — the combination of Oystersteel and 18-carat yellow gold that Rolex has refined across decades — distinguished here by a 24-diamond bezel and a black index dial. The Rolesor pairing places yellow gold at the bezel, crown, and bracelet centre links while the case flanks retain steel, creating a two-tone aesthetic that has defined aspirational watch design since the Datejust's post-war rise. The diamond bezel, with its 24 individually set brilliant-cut stones, displaces the traditional fluted option in favour of sustained luminous sparkle.

Inside, the Calibre 2235 provides reliable automatic winding with a Parachrom hairspring, delivering the kind of daily accuracy that has made the Datejust a dependable companion across generations. The black dial with applied index markers creates a strong contrast against the warm gold tones of the case and bracelet, making the watch as legible in practice as it is decorative in intent. The Jubilee bracelet — in matching Rolesor configuration — provides the characteristic five-piece link construction that has been associated with this model since its 1945 debut.

In the broader Datejust market, the 178343's combination of diamond bezel and black dial occupies a sweet spot between everyday wearability and jewellery-level presence. It appeals to buyers who want more than a plain-bezel sports hybrid without fully committing to an all-precious-metal configuration. Resale performance is consistent, with the Rolesor and diamond bezel combination holding broad appeal across demographics. Box and papers materially affect value at resale, as does the condition of the diamond setting.