Rolex Datejust 31 White Gold — Blue Diamond Dial, Fluted Bezel | Ref. 178279

Reference 178279 represents the 31 mm Datejust in its most refined precious metal configuration: an 18k white gold case with fluted bezel, paired with a blue dial set entirely with diamond hour markers. The 31 mm size — introduced to bridge the 28 mm Lady-Datejust and the 36 mm standard — sits comfortably on a wide range of wrists and has attracted a growing collector following as a gender-neutral format. White gold against blue and diamonds is a classically coherent palette, one that Rolex has refined across multiple references.

Calibre 2236 powers this reference, Rolex's purpose-built movement for 31 mm and smaller Datejust models. Its silicon Syloxi hairspring provides magnetic resistance and improved long-term timekeeping stability over traditional Nivarox alloy springs, while the 55-hour power reserve accommodates weekend removal without resetting. The President bracelet — Rolex's most formal bracelet design, with semi-circular three-piece links — in white gold adds material weight and dressing gravity that distinguishes this from steel or Rolesor equivalents.

The 178279 series preceded the current 278279 generation and represents the last Datejust 31 in the previous case architecture. For collectors interested in white gold Datejusts, this reference has become something of a reference point: the combination of factory diamond dial, fluted bezel, and President bracelet in white gold is one of the most complete factory specifications available at this case size, and it consistently performs well against comparable jewellery watches at auction.