Ruby fluoresces under ultraviolet, which means it glows faintly in daylight from the sun's own UV content — the reason fine ruby looks brighter outdoors than any photograph indoors will show. On a white gold Royal Oak that effect is amplified by the metal around it.

The white gold case measures 37 mm with a gem-set bezel. The white gold dial is set with baguette-cut rubies and carries white gold Royal Oak hands. The watch is completed on a white gold bracelet set with baguette-cut rubies with an AP folding clasp. The 37 mm case takes smaller stones than the 41 mm version of the same design, so more of them are needed and the matching problem grows rather than shrinks.

This exceptional piece is not currently in stock due to its rarity on the market. Please register your interest, and our sourcing team will leverage our global network of collectors and trusted partners to pursue one on your behalf.