Rolex Day-Date 40 Yellow Gold — Onyx Dial | Ref. 228348

The Day-Date 40 reference 228348 with a natural black onyx dial represents one of the rarest and most historically significant material choices available in the President's Watch lineup. Natural onyx — a form of chalcedony cut and polished to a perfectly flat dial surface — has been associated with fine watchmaking since the 1970s and carries a visual depth and lustre that no lacquer or enamel can replicate. Its matte-to-lustrous surface, depending on the specific finish, achieves a gravity and restraint that is entirely distinct from lacquer black dials. Against an 18ct yellow gold case and President bracelet, the onyx creates a maximum chromatic contrast that is simultaneously bold and timeless. This reference exemplifies the Day-Date's enduring capacity to combine rare natural gemstone materials with the most recognised architecture in dress watchmaking.