Rolex Datejust 31 White Rolesor — White Roman Dial, Domed 24-Diamond Bezel | Ref. 278344RBR

Reference 278344RBR introduces a distinct aesthetic register within the Datejust 31 family through its domed bezel set with 24 brilliant-cut diamonds — a configuration that differs meaningfully from the flat 46-stone bezel found on other gem-set Datejust 31 variants. The raised profile of the domed bezel adds architectural depth to the profile view, catching light at additional angles and giving the watch a more three-dimensional presence on the wrist. White Rolesor construction — Oystersteel with 18ct white gold — keeps the overall palette cool and coherent with the white Roman numeral dial beneath.

Calibre 2236, the current movement for the 31 mm Datejust series, operates at the core of this reference. Its Syloxi hairspring, developed and manufactured in-house, provides excellent isochronism across temperature variations and magnetic environments, with a power reserve of approximately 55 hours. The white Roman dial is finished in a luminous enamel-like surface with applied gold hour markers replaced by clean Roman numerals — a classical choice that complements the domed bezel's jewellery-forward profile. The Jubilee bracelet in White Rolesor maintains the reference's tonal discipline from case to clasp.

The domed 24-diamond bezel variant occupies a specialist niche within the 278344RBR range, appealing to collectors who prefer a gem-set watch with a more architectural and formally jewellery-oriented character than the flat-bezel alternatives. Supply on the secondary market is consistently limited, and examples retaining original box, papers, and tag command the firmest premiums. For buyers seeking a Datejust 31 that reads as pure jewellery at first glance while delivering Rolex's full technical capability within, this reference is among the most satisfying options available.