Rolex Datejust Lady 31 31 mm 278240AMP Steel/White Gold/Diamonds Black Mother of Pearl Rolex Datejust Lady 31 31 mm 278240AMP…

The Rolex Datejust is one of the most enduring icons in watchmaking history, introduced in 1945 as the first self-winding wristwatch to display the date in a window on the dial. Over the decades, Rolex refined the Datejust into a comprehensive family of sizes and configurations, and the Lady 31 occupies a sweet spot that suits a broad range of wrists while offering every ounce of the craftsmanship the brand is renowned for. Reference 278240AMP represents the contemporary expression of that legacy, blending horological tradition with undeniable brilliance.

At 31 mm, the case is fashioned in Rolex's proprietary Oystersteel—a 904L stainless steel alloy prized for its exceptional resistance to corrosion and its ability to take a deep, lasting polish—complemented by white gold accents that give the lugs and crown a warmer, more precious character. The marriage of steel and white gold is a hallmark of mid-tier Datejust luxury, delivering visual richness without the full weight or cost of an all-precious-metal case. The Oyster case is water resistant to 100 metres (330 feet), underscoring that this is a serious Rolex built to Oyster standards, not merely a jewellery piece.

The dial is finished in black mother-of-pearl, a material harvested from the inner lining of certain mollusc shells and prized for its organic iridescence. Under changing light the surface shifts between deep charcoal, midnight blue, and violet—no two dials are identical, which makes each 278240AMP genuinely one-of-a-kind at the dial level. The custom diamond-set bezel frames this dial with continuous brilliance, transforming the watch's profile into something that reads confidently across a candlelit dinner table or a sun-drenched terrace.

Powering the 278240AMP is a Rolex-manufactured automatic movement, regulated to Rolex's famously stringent standards and offering the wearer silent, maintenance-friendly reliability day after day. Automatic winding means the movement stays charged through the natural motion of the wrist, so the Datejust Lady 31 is as effortless to live with as it is beautiful to wear. The Oyster bracelet—one of Rolex's most recognisable three-link designs—provides a secure, comfortable fit and maintains the watch's sporty-luxe aesthetic through its satin and polished finishing.

For collectors and first-time Rolex buyers alike, the Datejust Lady 31 278240AMP occupies a compelling position in the market: it carries the prestige and resale strength of the Rolex name, displays the instant recognisability of the Datejust silhouette, and adds the drama of a diamond bezel and mother-of-pearl dial that genuinely elevate it above the standard steel configuration. It is equally at home as a daily companion or a special-occasion statement piece. Bizak & Co. invites you to explore this reference and reach out with any questions—our team is on hand to guide you through the purchase process and ensure a confident, informed buying experience.