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

The Rolex Lady-Datejust 31 is one of the most enduring icons in fine watchmaking, tracing its lineage back to the original Datejust introduced in 1945—the first self-winding wristwatch to display the date in a window on the dial. In the decades since, Rolex has refined the Lady-Datejust into an expression of quiet authority and effortless elegance, and the 31mm case size occupies the sweet spot between the classic 28mm Lady-Datejust and the full 36mm unisex Datejust, making it one of the most sought-after references in the entire Rolex catalog.

Reference 278343RBRSDJ pairs Oystersteel—Rolex's proprietary corrosion-resistant alloy in the 904L family—with 18k yellow gold on the case midlinks, crown, and bezel, creating the warmly contrasted two-tone aesthetic that collectors call Rolesor. The domed bezel is set with a continuous ring of round brilliant diamonds in yellow gold, catching light at every angle and framing the dial with a subtle sparkle that photographs as well as it reads in person. It is a detail that elevates the watch from refined to genuinely luxurious without tipping into excess.

The silver dial is clean and immediately legible, a hallmark of Rolex dial philosophy. Rolex dials at this tier are produced entirely in-house and finished to exacting standards; the silver sunray or metallic finish creates gentle depth, and hour markers and hands in yellow gold-toned metal tie the dial back to the case's Rolesor theme. The overall visual composition is cohesive and considered, the kind of dial you can read at a glance in a business meeting and admire on closer inspection afterward.

Power comes from a Rolex-manufactured automatic movement sealed inside the Oyster case, which is water resistant to 100 meters (330 feet)—a specification that puts it well beyond the requirements of daily life and occasional aquatic exposure. The Oyster case is screwed down at the crown and caseback, providing robust protection that has been a Rolex engineering signature since 1926. Worn daily or kept as a treasured piece in rotation, this Lady-Datejust is built to perform for generations.

The five-piece Jubilee bracelet, introduced alongside the original Datejust in 1945, remains the most elegant bracelet option in the Rolex lineup. Its articulated links conform naturally to the wrist and carry an association with celebration and occasion that is embedded in both its name and its history. On the 278343RBRSDJ the bracelet arrives in matching Oystersteel and yellow gold links, extending the Rolesor theme from case to clasp in a seamless presentation.

At Bizak & Co. we specialize in sourcing and presenting luxury timepieces like the Lady-Datejust 31 278343RBRSDJ for discerning buyers across the United States. Whether you are purchasing your first Rolex or adding to an established collection, our team is ready to answer every question, provide detailed condition notes, and guide you through a secure transaction. Browse the Lady-Datejust 31 for sale at bizakandco.com or reach out directly—we are here to help you find exactly the right watch.