Datejust 31 MOP Diamond Dial Diamond Bezel Steel 18KT Yellow Gold Oyster 278383MDO
The Rolex Datejust 31 Reference 278383MDO is an exceptionally luxurious and eye-catching timepiece, maximizing elegance through diamond setting and the classic two-tone aesthetic. This model features a shimmering Mother-of-Pearl (MOP) Dial set with diamonds, a dazzling Diamond-Set Bezel, and the robust Oyster 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, providing maximum sparkle and luxury appeal.
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 | 278383MDO |
| Dial | |
| Color/Material | Mother-of-Pearl (Iridescent, unique natural pattern) |
| Markers | 10 Diamond Hour Markers (Set in 18K Yellow Gold) |
| Aesthetic | Maximum diamond sparkle combined with the sportier Oyster bracelet |
| Movement | |
| Type | Perpetual, mechanical, self-winding |
| Power Reserve | Approx. 55 hours |
| Caliber | Calibre 2236 (Featuring Syloxi hairspring) |
| Technology | Superlative Chronometer |
| Bracelet/Strap | |
| Material | Oyster (three-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/Center 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). This model features the Oyster bracelet for a slightly more robust feel |
The timepiece is fitted with the robust, three-piece link Oyster bracelet, known for its strength and sportier appearance compared to the Jubilee. Crafted in a two-tone Rolesor Yellow Gold style, the outer links are in satin-finished Oystersteel while the center 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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