Datejust 31 Silver Diamond Dial Diamond Bezel Steel 18KT Yellow Gold Oyster M278383RBR-0019
The Rolex Datejust 31 Reference M278383RBR-0019 is a statement piece of high horology, featuring maximum diamond setting for spectacular brilliance. This model presents a bright Silver Dial set with diamonds, a magnificent Diamond-Set Bezel (often featuring extra large or ‘RBR’ style diamonds), and the robust Oyster bracelet, all crafted 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. The ‘RBR’ (Rolex Briolette-cut Rims) or similar codes can indicate an enhanced diamond setting, where the brilliant-cut diamonds are set edge-to-edge in solid 18K Yellow Gold, providing maximum light refraction and sparkle.
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: 0019) |
| Dial | |
| Color | Silver (Bright, neutral Sunray finish) |
| Markers | 10 Diamond Hour Markers (Set in 18K Yellow Gold) |
| Aesthetic | Maximum diamond sparkle combined with the versatile 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 Ultra-Luxury Dress Watch |
| Construction | Steel Case/Outer Links with 18K Yellow Gold Diamond Bezel/Center Links |
| Key Features | Diamond-Set Bezel and Dial, Calibre 2236, Oyster Bracelet |
| Note | The ‘383’ suffix indicates a Rolesor Yellow Gold case with a diamond-set bezel (31mm size). This model is differentiated by the use of the Oyster bracelet. |
The centerpiece is the bright Silver Diamond Dial. This classic, clean silver hue is typically executed with a sunray finish. The dial features 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, greatly enhancing the overall brilliance.
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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