Rolex Datejust White Rolesor — White Mother-of-Pearl Diamond Dial | Ref. 278384RBR

Reference 278384RBR presents the Datejust 31 in its White Rolesor configuration — a pairing of Oystersteel with 18ct white gold that achieves a cooler, more contemporary aesthetic than the warmer yellow or Everose Rolesor variants. White Rolesor was introduced to offer the visual proximity to platinum at a more accessible price point, the white gold components — bezel ring, crown, and Jubilee bracelet centre links — providing a seamless tonal bridge between the steel flanks and the brilliance of the diamond bezel. The RBR suffix specifies a full diamond bezel in which brilliant-cut stones are channel-set across the white gold bezel ring in a continuous band.

The white mother-of-pearl diamond dial represents the fullest expression of the reference's jewellery ambitions. Nacre panels, cut from natural mollusc shell and selected for colour uniformity across a single dial, provide the iridescent base layer — a shifting surface that ranges from white to silver to pale blue-green depending on incident light angle. Diamond hour markers replace the conventional applied metal indices, their table-facets directed upward from individually bezel-set settings across the dial. The combination of nacre and diamond creates a material dialogue of remarkable depth: organic luminescence meeting the geometric brilliance of faceted stone.

The Jubilee bracelet in White Rolesor — five-link construction with white-gold centre links and steel outer links — was the original bracelet design created for the 1945 Datejust and remains the most formally dressed of the Oyster bracelet family. The Calibre 2236 within the 31 mm Oyster case provides 55 hours of power reserve powered by its Perpetual self-winding rotor, while the Syloxi silicon hairspring offers magnetic field resistance without the need for a soft-iron Faraday cage. Water resistance to 100 metres and Superlative Chronometer certification complete a specification that underpins reference 278384RBR's credentials as a serious mechanical instrument despite its high-jewellery presentation.