Rolex Day-Date 36 Gold — Eisenkiesel Dial | Ref. 128345RBR

Reference 128345RBR introduces one of the more unusual dial materials in the contemporary Day-Date 36 catalogue: Eisenkiesel, a naturally occurring quartz mineral whose name translates from German as 'iron flint.' The stone's characteristic warm brown and ochre tones, veined with mineral inclusions, produce a dial surface that is entirely unrepeatable — each watch is unique by nature. Combined with a gold case and the RBR designation indicating a gem-set bracelet, this reference represents the Day-Date 36 at its most individualised.

The Calibre 3255 provides the movement foundation for the 128345RBR — Rolex's current in-house manufacture calibre for the Day-Date 36, featuring a 70-hour power reserve and Chronergy escapement. The gold Oyster case carries the Day-Date's signature President bracelet, here in the RBR configuration with individually set brilliant-cut diamonds across the bracelet links, adding a further dimension of gem-set craftsmanship to the reference. The Eisenkiesel dial panels are hand-selected and cut to the case dimensions, with each piece presenting its own mineral character.

For the collector focused on rarity and natural material, stone-dial Day-Date references with gem-set bracelets represent the summit of production complexity within Rolex's catalogue. Eisenkiesel dials are among the less commonly encountered stone variants, and the RBR bracelet configuration further limits production volumes. Secondary-market interest in stone-dial Day-Dates has grown markedly as collector appetite for natural, non-repeating dials has intensified across the luxury watch segment.