Rolex Datejust 28 Yellow Rolesor — Silver Index Dial, Diamond Bezel | Ref. 279383RBR

Reference 279383RBR positions the Lady-Datejust 28 at the jewellery-forward end of its range, combining a factory diamond bezel — confirmed by the RBR designation — with a silver index dial in Yellow Rolesor. The configuration allows the diamond bezel to carry the decorative weight while the silver dial with applied gold index markers maintains a clean, legible face. Yellow Rolesor's warm metal tones give the overall composition a traditional luxury character that contrasts with the cooler White Rolesor alternatives, and at 28mm the watch retains a delicacy of proportion that suits its intended positioning as an elegant dress piece.

The Calibre 2236 powers this Lady-Datejust 28, a self-winding manufacture movement developed specifically for Rolex's smaller-diameter watch cases. Its Syloxi silicon hairspring provides the same magnetic resistance and thermal stability offered by the Parachrom elements found in larger calibres, while the 55-hour power reserve ensures reliable operation through infrequent wear cycles. The screw-down Twinlock crown protects the movement to 100 metres water resistance, and the sapphire crystal with its integrated Cyclops lens magnifies the date window by 2.5 times for unambiguous reading. The President or Jubilee bracelet in Yellow Rolesor completes the specification.

Buyers for the 279383RBR are generally drawn to the factory diamond bezel as a distinction from the standard smooth or fluted variants — the RBR suffix confirms Rolex's own gemological work rather than aftermarket addition, which matters significantly for insurance valuation and resale. The yellow gold tone in the Rolesor construction has historically retained strong buyer interest relative to white Rolesor in the 28mm format, particularly in markets where yellow gold carries cultural associations with fine jewellery. Condition of the bezel diamonds and the yellow gold elements should be examined at any pre-purchase inspection.