Rolex Datejust Yellow Rolesor — White Mother-Of-Pearl Diamond Dial, Diamond Bezel | Ref. 279383RBR

Reference 279383RBR exemplifies Rolex's mastery of the Rolesor concept — the artful union of 18ct yellow gold and Oystersteel that has defined the two-tone Datejust since its introduction in 1969. In the Lady-Datejust 28 format, this combination achieves a jewel-like coherence: the yellow gold bezel set with brilliant-cut diamonds creates a luminous crown above an Oystersteel case, while the White Mother-of-Pearl dial, itself set with diamond hour markers, shimmers with organic iridescence beneath. The RBR designation confirms the rubies, blue sapphires, and diamonds that adorn the bracelet links, elevating the entire piece into a wearable jewellery composition.

Calibre 2236 provides the movement architecture, a Rolex manufacture calibre that represents the current state of the art for the Lady-Datejust platform. The Syloxi hairspring — produced in-house from amorphous silicon — confers paramagnetic properties and exceptional dimensional stability, while the movement's bi-directional self-winding rotor maintains near-perpetual power reserve under normal wearing conditions. With a 55-hour reserve and COSC chronometer certification, the 2236 is a movement whose precision belies the decorative extravagance of its host case.

The 279383RBR with Mother-of-Pearl diamond dial is a reference that demands considered evaluation from the perspective of jewellery watch collecting. Mother-of-Pearl dials are harvested from the inner nacre layer of molluscs and cut to exact dial specifications, meaning no two are precisely identical — each piece carries a unique pattern of iridescence. Combined with the gem-set bracelet of the RBR specification and the diamond bezel, this watch represents a commissioning of multiple skilled artisans from Rolex's Geneva workshops, making it as much a work of applied art as it is a precision timepiece.