Rolex Datejust 31 31 mm 278344RBRBKRJ Steel/White Gold/Diamonds Black

The Rolex Datejust is one of the most enduring and recognizable watch designs in horological history, having debuted in 1945 as the first self-winding wristwatch to display the date in a window on the dial. Across eight decades of continuous production, the Datejust has evolved in proportion, material, and decoration while preserving the core vocabulary that made it iconic: the fluted or set bezel, the Jubilee bracelet, and the instantly legible date display. The 31mm case size occupies a distinguished position in the current lineup, larger than the classic 28mm Lady-Datejust yet more refined than the 36mm or 41mm references, making it a genuinely versatile choice for any wrist.

Reference 278344RBRBKRJ is among the most visually arresting configurations in the Datejust 31 family. The case and bracelet are constructed from Rolex's proprietary Oystersteel — a 904L stainless steel alloy prized for its exceptional resistance to corrosion and its ability to hold a high polish — paired with 18k white gold crown guards, crown, and bezel mounting. This two-tone architecture gives the watch a cool, luminous quality that photographs and performs beautifully under any light.

The bezel is one of the most compelling details of this reference: a domed white gold setting paved with individually set brilliant-cut diamonds that encircle the dial with continuous sparkle. Diamond bezels of this type require meticulous hand-setting and are graded for consistent color and size before leaving Geneva, making each example a minor feat of jewellery craft in addition to watchmaking. The black dial beneath is finished in a rich, deep tone and populated with Roman numerals, a dial configuration that adds classical gravitas and excellent legibility in equal measure.

Power comes from a Rolex automatic movement, delivering the reliable, self-winding performance that Datejust owners have depended upon for generations. The movement is housed in the iconic Oyster case, which provides 100 metres (330 feet) of water resistance thanks to Rolex's screw-down Twinlock crown — exceptional resilience for a dressed watch of this stature. The Jubilee bracelet, originally introduced alongside the very first Datejust in 1945, completes the ensemble with its five-piece link construction and supple, articulated drape that is immediately recognizable and supremely comfortable on the wrist.

Bizak & Co. is pleased to offer this Rolex Datejust 31 ref. 278344RBRBKRJ for sale online and in person. Whether you are adding a statement piece to an established collection or purchasing a first luxury watch, this reference delivers an exceptional combination of certified Rolex craftsmanship, diamond embellishment, and everyday wearability. Reach out to the Bizak & Co. team to verify current availability, discuss condition details, and arrange a secure purchase with full confidence.