Rolex Datejust 31 Everose Rolesor — Rose Index Dial | Ref. 278241

Positioned between the Lady-Datejust 28 and the Datejust 36 in the contemporary Rolex portfolio, the Datejust 31 occupies an intermediary scale that accommodates both smaller and larger wrist proportions without compromise. Reference 278241 in Everose Rolesor applies the Rolex two-tone formula — Oystersteel case with 18 ct Everose gold bezel — to a 31 mm Oyster case whose proportions trace directly back to the 1945 original Datejust, making this among the most historically continuous references in the current range.

The Rose Index dial presents an immediately distinctive warm-toned ground in a deep blush register, dressed with applied Everose-gold baton hour markers whose cross-section is trapezoidal — wider at the outer edge, tapering toward the centre — creating a subtle depth illusion under raking light. There is no applied text beyond the Rolex crown and nomenclature at twelve and six o'clock respectively, a restraint that allows the dial colour and the material quality of the indices to carry the full aesthetic burden. The fluted bezel in Everose gold adds a faceted perimeter that multiplies available surface reflections across twenty flutes per circumference.

Inside the 31 mm Oyster case, Calibre 2236 operates at 28,800 vph with a Syloxi hairspring — Rolex's silicon hairspring component fabricated to tolerances inaccessible through conventional spring-steel rolling — delivering 55 hours of power reserve and Superlative Chronometer precision. The Jubilee bracelet in mixed Oystersteel and Everose gold links completes the reference, its five-link articulation providing a drape and comfort characteristic of the model since the bracelet's debut in 1945 alongside the original Datejust.