Rolex Lady-Datejust 31 31 mm 278343RBROGDO Steel/Yellow Gold/Diamonds Green

The Rolex Lady-Datejust 31 is one of the most enduring icons in fine watchmaking, tracing its lineage to the original Datejust introduced in 1945 — the first self-winding wristwatch to display the date in a window at 3 o'clock. The 31mm case size sits precisely between the classic 28mm Lady-Datejust and the full-size 36mm Datejust, delivering an ideally proportioned dial and case for wrists that appreciate presence without excess. Reference 278343RBROGDO represents the pinnacle of this lineage, combining two of Rolex's most desirable materials and one of the brand's most striking contemporary dial colors.

The case and bracelet of the 278343RBROGDO are constructed in Rolex's proprietary Oystersteel — a 904L stainless steel alloy renowned for its exceptional corrosion resistance and mirror-bright polishability — paired with 18k yellow gold on the bezel, crown, and Oyster bracelet center links. This Rolesor combination, a Rolex hallmark since the 1930s, creates a warm yet sporty aesthetic that transitions effortlessly from casual daywear to formal occasions. The 31mm Oyster case is water resistant to 100 metres (330 feet), sealed by a screw-down Triplock winding crown.

The olive green dial is arguably the most compelling detail of this reference. Deep, earthy, and richly saturated, the olive green finish catches light in a way that reads differently in sunlight versus candlelight, giving the watch a living, dimensional quality that flat-colored dials cannot match. The dial is paired with a yellow gold domed bezel set with a continuous parade of brilliant-cut diamonds, adding a layer of brilliance that elevates the watch firmly into the jewelry-watch category without sacrificing legibility or sportiness.

Powering the 278343RBROGDO is a Rolex automatic movement, regulated to the precision standards Rolex demands of every caliber it produces and certified as a Superlative Chronometer — meaning it has passed Rolex's own in-house testing to a tolerance tighter than the industry-standard COSC certification. The self-winding rotor keeps the mainspring wound through normal wrist motion, ensuring the date display and timekeeping remain accurate without manual intervention during regular wear.

On the wrist, the Lady-Datejust 31 in this configuration is both commanding and refined. The Oyster bracelet with its three-link design, polished center links in yellow gold and brushed outer links in Oystersteel, provides a secure and comfortable fit complemented by the Rolex Oysterlock safety clasp and Easylink comfort extension system. Whether worn as a daily companion or reserved for special occasions, the 278343RBROGDO is a watch that appreciates in desirability and stands as a sound long-term acquisition.

At Bizak and Co., we specialize in sourcing and presenting pre-owned and unworn luxury timepieces with full transparency. The Rolex Lady-Datejust 31 ref. 278343RBROGDO is available for purchase online or by direct inquiry through our team. Please note that Bizak and Co. is not an authorized Rolex dealer; all Rolex trademarks remain the property of Rolex SA. Contact us today to confirm current availability, condition details, and to arrange a secure purchase of this exceptional timepiece.