Rolex Datejust White Rolesor — Black Diamond Dial 24 Diamond Bezel | Ref. 178344

Reference 178344 is a Datejust 31 in White Rolesor configuration, distinguished by a 24-diamond bezel set in 18 ct white gold and a black dial set with diamond hour markers. At 31 mm, this is a midsize Datejust — a format that has grown significantly in collector appeal as the watch industry has moved toward more versatile sizing across genders.

Calibre 2235 drives this 178xxx-series Datejust 31 — a movement developed specifically for Rolex's midsize and ladies' watches, featuring automatic winding, a Parachrom hairspring, and a 48-hour power reserve. The 24-diamond bezel, each stone individually set in white gold to maximise brilliance against the case flanks, creates an extraordinary frame for the black diamond dial below. The contrast between the dark dial ground and the brilliant-cut diamond markers is visually striking, with each stone catching ambient light independently. The Jubilee bracelet in White Rolesor — alternating polished white gold and brushed Oystersteel centre links — brings a refined taper to the 31 mm case.

Midsize Datejusts in fully diamond-set configurations occupy a nuanced position in the collector market: they offer the jewellery-watch proposition of larger diamond-bezel references in a more understated footprint. Reference 178344 with the 24-diamond bezel and black diamond dial is among the more lavishly configured 31 mm options Rolex has produced, and complete examples with original documentation are increasingly sought by collectors who prioritise precious material density alongside movement pedigree.