Rolex Datejust 31 Everose Rolesor — 46-Diamond Bezel Chocolate Diamond Dial | Ref. 278381RBR

Reference 278381RBR represents the Datejust 31 in its most jewellery-forward configuration, combining the warmth of Everose Rolesor — Rolex's proprietary blend of 904L steel and 18 ct Everose gold — with a 46-stone diamond-set bezel and a chocolate dial set with diamond hour markers. At 31 mm, this case sits precisely at the intersection of the men's and ladies' collections, making it a versatile choice for wrists that prefer a refined scale without sacrificing the Datejust's visual weight.

Calibre 2236 powers the 278381RBR, a movement developed specifically for the mid-size and ladies' Datejust range. Cal 2236 features a silicon Syloxi hairspring — Rolex's proprietary silicon component that provides superior resistance to magnetic fields and temperature variations compared to traditional Nivarox alloys — and a self-winding bidirectional rotor. The chocolate dial is one of the more distinctive warm-toned options in the Datejust palette, its deep brown lacquer contrasting sharply with the white-gold diamond markers and the warm rose tones of the Everose gold elements throughout the case and bracelet.

The 278381RBR targets collectors who want a fully dressed Datejust without committing to a single-metal precious case. Rolesor configurations have a long history in the Datejust line stretching back decades, and the Everose variant brings a contemporary warmth to this bi-metal tradition. Diamond-set bezels on Rolesor Datejusts represent strong secondary market performers, particularly in the 31 mm size where supply is more constrained than in the larger 36 or 41 mm variants.