Datejust 31 MOP Diamond Dial Diamond Bezel Steel 18KT Yellow Gold Jubilee 278383MDJ
The Rolex Datejust 31 Reference 278383MDJ is an exceptionally luxurious timepiece that maximizes its sparkle by combining the natural beauty of a Mother-of-Pearl dial with a stunning diamond-set bezel. This model features a shimmering Mother-of-Pearl (MOP) Dial set with diamonds, a dazzling Diamond-Set Bezel, and the elegant Jubilee bracelet, all presented in the iconic Rolesor Yellow Gold design (Oystersteel and 18K Yellow Gold).
The watch features a robust monobloc middle case in durable Oystersteel (Stainless Steel), ensuring reliability and strength. The case is water-resistant to 100 metres (330 feet), secured by the screw-down Twinlock winding crown.
The case is framed by the mesmerizing Diamond-Set Bezel. This feature consists of precisely set, brilliant-cut diamonds, set into a bed of solid 18K Yellow Gold, maximizing the watch’s luminosity and providing the ultimate element of luxury.
Key Features
| Case | |
| Material | Oystersteel and 18K Yellow Gold (Rolesor Yellow Gold) |
| Dimensions | 31 mm (Modern mid-size) |
| Water Resistance | 100 metres (330 feet) |
| Bezel | Diamond-Set (18K Yellow Gold, brilliant-cut diamonds) |
| Crystal | Scratch-resistant Sapphire with Cyclops lens |
| Reference | 278383MDJ |
| Dial | |
| Color/Material | Mother-of-Pearl (Iridescent, unique natural pattern) |
| Markers | 10 Diamond Hour Markers (Set in 18K Yellow Gold) |
| Aesthetic | Maximum diamond sparkle in a two-tone execution |
| Movement | |
| Type | Perpetual, mechanical, self-winding |
| Power Reserve | Approx. 55 hours |
| Caliber | Calibre 2236 (Featuring Syloxi hairspring) |
| Technology | Superlative Chronometer |
| Bracelet/Strap | |
| Material | Jubilee (five-piece links) in Rolesor Yellow Gold (Steel & Yellow Gold) |
| Clasp | Folding Oysterclasp with Easylink 5mm extension |
| Additional Info | |
| Watch Style | Rolesor Yellow Gold High Luxury Dress Watch |
| Construction | Steel Case/Outer Links with 18K Yellow Gold Diamond Bezel/Inner Links |
| Key Features | MOP Diamond Dial, Diamond-Set Bezel, Calibre 2236 |
| Note | The ‘383’ suffix indicates a Rolesor Yellow Gold case with a diamond-set bezel (31mm size). |
The timepiece is fitted with the elegant, five-piece link Jubilee bracelet, renowned for its comfort and fluid appearance. Crafted in a two-tone Rolesor Yellow Gold style, the outer links are in Oystersteel while the inner links are in polished 18K Yellow Gold. The bracelet fastens securely with the folding Oysterclasp, which includes the Easylink 5 mm comfort extension link.
The centerpiece is the ethereal Mother-of-Pearl Diamond Dial . Mother-of-Pearl is a natural material, ensuring every dial is unique, shimmering with iridescent colors—ranging from whites and pinks to blues and greens—that change subtly with the light.
The hours are marked by 10 brilliant-cut Diamond Hour Markers (with the Rolex Crown at 12 o’clock and a date window at 3 o’clock), meticulously set in 18K Yellow Gold surrounds. These diamonds enhance the dial’s inherent sparkle, complementing the diamond-set bezel. The date is displayed at 3 o’clock, magnifying beneath the Cyclops lens.
Under the dial lies the robust and precise Calibre 2236 movement. This self-winding mechanical movement incorporates the patented Syloxi hairspring, providing exceptional performance, accuracy, and reliability, and is certified as a Superlative Chronometer, completing this distinguished timepiece.








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