Rolex Datejust 31 White Rolesor — Mother-of-Pearl Roman & 24-Diamond Bezel | Ref. 178344

Reference 178344 represents the Datejust 31 at its most decorative — a White Rolesor construction dressed with a 24-diamond bezel and a mother-of-pearl dial set with Roman numeral hour markers. This is Rolex design language shifted firmly toward jewellery territory: the case combines Oystersteel with 18-carat white gold, and the bezel's brilliant-cut diamonds replace the conventional fluted or smooth format entirely. The mother-of-pearl dial surface shifts between creamy white and iridescent grey depending on the angle of light, a quality no lacquered or sunray-finished dial can replicate.

Calibres for the 178xxx Datejust 31 series are drawn from the Calibre 2235 family, a movement engineered for Rolex's ladies' references with a bidirectional Perpetual rotor and an integrated date mechanism. The movement carries Superlative Chronometer certification, verifying accuracy of ±2 seconds per day after casing. The Oyster case provides 100 metres of water resistance, sealed through a screw-down Twinlock crown and solid caseback. The bracelet for this White Rolesor reference is typically the Jubilee, whose five-piece links soften the wrist contact and complement the jewelled aesthetic.

On the secondary market, diamond-bezel Datejust references occupy a distinct collector segment — buyers here are often motivated by both investment value and wearability, since factory-set diamond bezels retain more premium than aftermarket modifications. The mother-of-pearl Roman dial is a combination that recurs across Rolex's catalogue at multiple price points, but the 31mm White Rolesor execution offers a refined balance of scale and formality that suits both gifted pieces and self-purchases for the discerning buyer.