Rolex Datejust 31 31 mm 278384RBRBLURJ Steel/White Gold/Diamonds Blue

The Rolex Datejust is one of the most iconic and enduring watch families ever created, having introduced the world's first self-winding wristwatch to display the date in a magnified window at 3 o'clock when it debuted in 1945. Across more than seven decades, the Datejust has grown into a broad family of references spanning multiple sizes and material combinations, yet it has never lost the elegant proportions and quiet confidence that made it a symbol of achievement. The 31mm case size occupies a coveted middle ground—larger than a traditional ladies' dress watch yet more refined than a full-size 36mm or 41mm sport model—and it has attracted a devoted following among those who appreciate understated power on the wrist.

Reference 278384RBR represents one of the most jewel-forward expressions of the Datejust 31 line. The case is constructed from Rolex's proprietary Oystersteel, a 904L stainless steel alloy prized for its exceptional corrosion resistance and its ability to hold a mirror polish with extraordinary depth, blended seamlessly with 18k white gold accents that elevate the profile from sporty to genuinely luxurious. The diamond-set bezel encircles the dial with a continuous ring of brilliant-cut stones, catching light from every angle and transforming the watch into something that reads as fine jewelry as much as a precision timepiece.

The bright blue Roman numeral dial is the visual centerpiece of this reference and the detail that collectors most often cite when describing its appeal. The vivid, saturated hue shifts subtly depending on lighting conditions—appearing deep sapphire in shade and lighter, more electric in direct sunlight—while the classical Roman numerals add a layer of heritage and formality that Arabic indices simply cannot replicate. Together, the blue dial and the sparkling diamond bezel create a color and texture contrast that is sophisticated without being ostentatious.

Completing the presentation is the iconic Jubilee bracelet, a five-piece link design that Rolex introduced alongside the original Datejust in 1945 and has refined continuously ever since. The Jubilee's finer, more numerous links give it a noticeably supple drape on the wrist compared to the broader Oyster bracelet, and it has long been considered the definitive pairing for the Datejust line. Finished with a combination of brushed and polished surfaces, it echoes the dual-texture approach of the case and reinforces the watch's position between sporty tool watch and elegant dress piece. The automatic movement within provides reliable, self-winding daily accuracy consistent with Rolex's exacting manufacturing standards.

Buying a Rolex Datejust 31 reference 278384RBR from Bizak & Co. means working with a knowledgeable luxury watch dealer dedicated to sourcing exceptional timepieces and providing a transparent, trustworthy purchasing experience. Whether you are adding this reference to a growing collection, purchasing it as a meaningful gift, or acquiring your first serious Swiss luxury watch, Bizak & Co. is here to answer every question and guide you through the process. Browse our current inventory online or reach out directly—our team is ready to help you secure this extraordinary blue diamond Datejust 31 today.