Rolex Datejust 31 Yellow Rolesor — MOP Diamond Dial, Fluted Bezel | Ref. 178273

Yellow Rolesor—the pairing of Oystersteel with 18ct yellow gold—has been a Datejust signature since the concept was first introduced, offering the warmth of gold without the full cost or weight of a monometallic case. Reference 178273 in 31mm deploys this combination with a fluted yellow gold bezel and a mother-of-pearl dial set with diamond hour indices, a configuration that rewards natural light with constant iridescent play.

Calibre 2236 powers this reference, Rolex's dedicated ladies' movement featuring the Syloxi silicon hairspring for superior magnetic resistance and thermal stability. The 55-hour power reserve is generous for the segment. The fluted bezel—one of Rolex's most enduring design signatures, originally serving a functional case-tightening role—is here rendered in polished 18ct yellow gold, its facets catching the light at every angle. The Oyster bracelet in matched Rolesor extends the two-tone aesthetic to the wrist with characteristic robustness.

The 31mm Datejust occupies a sweet spot for buyers transitioning from the 28mm Lady-Datejust who want additional presence without entering the 36mm unisex territory. Mother-of-pearl with diamond indices and a fluted gold bezel is a high-demand configuration in this size, making well-preserved examples straightforward to value. This reference suits a collector who prizes understated luxury worn daily over a piece reserved for special occasions.