Rolex Datejust Everose Rolesor — Rose Index Dial, 46-Diamond Bezel | Ref. 278381RBR (2)

Reference 278381RBR belongs to the current generation of the Datejust 31, introduced under the 278xxx series that brought with it the updated Calibre 2236 — a movement developed specifically for Rolex's smaller-cased watches. The Everose Rolesor construction pairs 904L steel on the case flanks with Rolex's proprietary 18k Everose gold, an alloy formulated to resist fading over time. The RBR suffix is significant: it denotes a diamond-set bezel in which 46 brilliant-cut stones replace the traditional fluted or smooth metal version.

Calibre 2236 is fitted with a silicon Syloxi hairspring, which offers improved resistance to temperature fluctuations and magnetic fields compared to traditional alloys. The movement operates at 28,800 vibrations per hour and delivers a 55-hour power reserve. The rose index dial carries applied hour markers finished to coordinate with the Everose case elements, and the overall warmth of the colour palette gives the piece a coherent, jewellery-informed sensibility without sacrificing the Oyster case's functional architecture.

In the current market, the 278381RBR is positioned as a premium ladies Datejust with a price point that reflects both the Everose gold content and the factory diamond work. The rose index configuration is among the more feminine-leaning options in the lineup and appeals particularly to buyers seeking the understated luxury of a Rolex that does not rely on size or overtly sporty design. It retains strong resale values, driven by consistent demand and the enduring desirability of the Datejust name across all market conditions.