Rolex Lady-Datejust 31 31 mm 278343RBRSRDVIO Steel/Yellow Gold/Diamonds Silver

Few timepieces in horological history carry the cultural weight of the Rolex Datejust, and the Lady-Datejust 31 distills that legacy into a refined 31mm proposition perfectly scaled for the modern woman. Introduced as an evolution of the original 1945 Datejust—the first self-winding waterproof watch to display the date in a window at 3 o'clock—the Lady-Datejust line has long represented the intersection of technical achievement and understated elegance. Reference 278343RBRSRDVIO belongs to the current generation of the Lady-Datejust 31, embodying everything that has made the name iconic for nearly eight decades.

The 31mm case of reference 278343RBRSRDVIO is constructed in Oystersteel—Rolex's proprietary 904L stainless steel prized for its exceptional corrosion resistance and mirror-bright polish—paired with 18k yellow gold to create the beloved Rolesor combination. This two-tone approach lends the watch a warmth and visual depth that pure steel cannot achieve, while keeping the profile accessible and versatile across a wide range of personal styles. Rated to 100 meters (330 feet) of water resistance through Rolex's Oyster case architecture, this Lady-Datejust is built for real life, not just the display case.

The yellow gold domed bezel set with diamonds elevates reference 278343RBRSRDVIO into genuine jewelry-watch territory. Rolex selects only diamonds that meet its stringent internal standards for cut, color, clarity, and carat weight, setting them with meticulous precision to maximize brilliance and uniformity. The result is a bezel that catches light from every angle, framing the silver dial with a constellation of fire that stops the room without ever feeling ostentatious.

Beneath the silver dial, an automatic movement drives the watch with the reliability that has made Rolex the benchmark for in-house watchmaking. The Oyster bracelet—featuring the same Rolesor two-tone aesthetic as the case—wraps the wrist with comfort and security, its three-piece link construction offering the ideal balance of flexibility and substance. The date aperture at 3 o'clock, magnified by Rolex's Cyclops lens, remains as functional and instantly legible as ever, a quiet reminder of the complication that defined an entire horological category.

Owning the Lady-Datejust 31 ref. 278343RBRSRDVIO means possessing one of the most recognizable and consistently desirable watches in the world. The Datejust has demonstrated extraordinary value retention across market cycles, and diamond-set, two-tone references in new condition represent some of the strongest performers in the secondary market. Whether purchased as a daily companion, a milestone gift, or a long-term addition to a curated collection, this reference rewards its owner on every level.

At Bizak & Co., every Rolex we offer is certified authentic and sourced with the utmost care. This Lady-Datejust 31 is available in brand-new condition, giving you the peace of mind that comes with an unworn timepiece. Visit bizakandco.com or reach out to our team directly—we are here to answer every question, facilitate a smooth purchase, and ensure this exceptional watch arrives in perfect order.