Rolex Lady-Datejust 31 31 mm 278383RBRWMDO Steel/Yellow Gold/Diamonds White Mother of Pearl

The Rolex Lady-Datejust 31 is one of the most enduring icons in fine watchmaking — a timepiece that has defined feminine luxury since Rolex introduced the Datejust line in 1945. The 31mm case size occupies the sweet spot between the classic 28mm Ladies Datejust and the fuller 36mm unisex format, giving the wearer a balanced, refined presence on the wrist. Reference 278383RBRWMDO represents this lineage at its most glamorous, combining precious materials, expert gem-setting, and the legendary Rolex Oyster architecture into a single, cohesive statement.

The case of the 278383RBRWMDO is rendered in the Rolex "Rolesor" tradition, pairing Oystersteel — the brand's proprietary corrosion-resistant alloy — with 18k yellow gold on the bezel, crown, and bracelet center links. This bi-material construction is not merely decorative; the contrast between the cool steel flanks and the warm golden accents creates a visual dynamism that reads differently in every light. The 31mm case is water resistant to 100 meters (330 feet) thanks to the screw-down Triplock crown and the hermetically sealed Oyster case, meaning everyday wear is never a concern.

The bezel of this reference is set with brilliant-cut diamonds, a detail that immediately elevates the watch from refined to extraordinary. Diamond bezels on the Lady-Datejust are hand-set by Rolex gem specialists, each stone selected for color, clarity, and consistency of size to ensure a uniform, continuous arc of brilliance encircling the dial. Paired with the white mother-of-pearl dial — a material prized for its soft, shifting iridescence that changes character under different lighting conditions — the overall effect is one of luminous depth rather than overt ostentation.

Powering the 278383RBRWMDO is a Rolex automatic movement, the hallmark of precision timekeeping that Rolex has refined over decades. The movement is officially certified as a Superlative Chronometer by Rolex, denoting accuracy to within plus or minus two seconds per day after casing — a standard that exceeds the requirements of COSC certification. The self-winding rotor ensures the movement stays wound during normal daily wear, so the date display — the watch's defining complication and nameplate feature — advances reliably night after night.

On the wrist, the Oyster bracelet completes the picture with a three-link structure that integrates Oystersteel and yellow gold center links, echoing the case's Rolesor character. The bracelet is supple yet substantial, secured by Rolex's folding Crownclasp for a secure fit. Whether worn to a formal occasion or as an elevated everyday companion, the Lady-Datejust 31 in this configuration commands attention without effort.

At Bizak & Co., we specialize in sourcing and presenting exceptional Rolex references for discerning collectors and first-time luxury watch buyers alike. The Lady-Datejust 31 ref. 278383RBRWMDO is among the most requested configurations we encounter, and inventory moves quickly. We invite you to contact our team directly or browse our curated selection at bizakandco.com to secure this timepiece, ask questions, or discuss trade-in options. Please note that Bizak & Co. is not an authorized Rolex dealer; all references are offered on the pre-owned or gray market.