Rolex Lady-Datejust 31 31 mm 278343RBRDGRDVIJ Steel/Yellow Gold/Diamonds Grey

The Rolex Lady-Datejust is one of the most enduring icons in watchmaking, introduced as the first self-winding wristwatch with a date display designed specifically for women. Over decades the collection has evolved in case size, materials, and finishing while retaining the instantly recognizable Datejust architecture — the fluted or set bezel, the magnifying Cyclops lens over the date window, and the elegantly proportioned Oyster case. The 31 mm size sits at the heart of the Lady-Datejust range, offering a versatile diameter that reads as unmistakably refined on the wrist without veering toward the oversized proportions of sport watches.

Reference 278343RBRDGRDVIJ represents one of the most glamorous configurations available in the current Lady-Datejust 31 lineup. The case and bracelet are rendered in a two-tone combination of Rolex's proprietary Oystersteel — an austenitic 904L steel prized for its exceptional corrosion resistance and mirror-bright polish — paired with 18k yellow gold on the bezel, crown, and Jubilee bracelet center links. This contrast of cool steel and warm gold is a hallmark of Rolex's two-tone aesthetic and has remained a collector favorite across generations.

The dark grey dial with Roman numerals is a study in understated drama. The deep grey tone creates a sophisticated backdrop that allows the gold Roman hour markers to command attention while the overall effect remains polished and dressy rather than loud. Roman numerals have long been associated with classical elegance in fine watchmaking, and on a Lady-Datejust they reinforce the watch's horological heritage. The yellow gold domed bezel is set with a continuous row of brilliant-cut diamonds, adding undeniable sparkle and elevating the reference into genuine jewelry-watch territory.

Power comes from a Rolex automatic movement, a self-winding caliber with the robustness and precision that the brand has refined over many decades of manufacture. Rolex movements are chronometer-certified to strict accuracy standards and are designed for daily wear with minimal service intervals. The watch carries a water resistance rating of 100 meters (330 feet), a practical specification that reflects the Oyster case's hermetically sealed construction and means this Lady-Datejust can accompany its owner through everyday life without concern.

The five-piece Jubilee bracelet is one of Rolex's most beloved designs, introduced alongside the original Datejust in 1945. Its alternating polished center links and brushed outer links produce a supple, jewel-like drape on the wrist and pair seamlessly with the yellow gold and steel case. Whether worn to a formal occasion or as an everyday companion, reference 278343RBRDGRDVIJ offers a level of versatility rare among diamond-set watches.

At Bizak and Co. we specialize in sourcing and presenting exceptional pre-owned and luxury Rolex timepieces for discerning buyers across the United States. This Lady-Datejust 31 in reference 278343RBRDGRDVIJ — with its grey Roman dial, diamond-set yellow gold domed bezel, and Jubilee bracelet — is a compelling choice for anyone seeking a watch that balances everyday durability with genuine fine-jewelry presence. Reach out to our team to ask about availability, condition details, and how to buy this reference online or in person.