Datejust 31 Dark Grey Pave Roman Dial Diamond Bezel Steel 18KT Yellow Gold Oyster M278383RBR-0017
The Rolex Lady-Datejust 31 Reference M278383RBR-0017 is a magnificent demonstration of Rolex’s high-jewelry expertise, combining exceptional craftsmanship with the classic two-tone aesthetic. This model features a sophisticated Dark Grey Dial with a diamond-set Roman numeral VI, a dazzling Diamond-Set Bezel, and the robust Oyster bracelet, all presented in the elegant 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 in the mid-size 31 mm size. The case is water-resistant to 100 metres (330 feet), secured by the screw-down Twinlock winding crown.
The case is framed by the highly luxurious Diamond-Set Bezel. The ‘RBR’ (Rolex Briolette-cut Rims) or similar codes often indicate an enhanced diamond setting, where the brilliant-cut diamonds are set edge-to-edge in solid 18K Yellow Gold, maximizing the watch’s luminosity and prestige.
The timepiece is fitted with the robust, three-piece link Oyster bracelet, known for its strength and slightly 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.
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 (Enhanced Setting, in 18K Yellow Gold) |
| Crystal | Scratch-resistant Sapphire with Cyclops lens |
| Reference | 278383RBR (Specific dial code: 0017) |
| Dial | |
| Color | Dark Grey |
| Markers | Roman Numerals with a Pavé Diamond-Set VI |
| Aesthetic | High-jewelry appeal with a sophisticated, monochromatic color palette |
| 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-Jewelry Dress Watch |
| Construction | Steel Case/Outer Links with 18K Yellow Gold Diamond Bezel/Center Links |
| Key Features | Diamond Bezel, Pavé Diamond Roman VI, Calibre 2236, Oyster Bracelet |
| Note | The ‘383’ suffix indicates a Rolesor Yellow Gold case with a diamond-set bezel (31mm size). |
The centerpiece is the sophisticated Dark Grey Dial. The deep, slate gray color provides a dramatic and elegant backdrop for the gold and diamonds.
A key feature of this dial is the combination of hour markers: the hours are marked by applied Roman Numerals (crafted in 18K Yellow Gold), with the VI o’clock marker executed as a pavé diamond-set numeral. This design element creates a unique focal point and adds a substantial touch of high jewelry. The date is displayed at 3 o’clock, magnified beneath the Cyclops lens.
Under the dial lies the high-performance 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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