Rolex Datejust 31 White Rolesor — Dark Grey Diamond Dial, Domed Diamond Bezel | Ref. 278344RBR

This configuration of reference 278344RBR explores a more dramatic palette within the Datejust 31's jewellery-watch spectrum: the domed 24-diamond bezel is paired with a dark grey diamond-set dial, creating a watch of striking tonal contrast between the brilliant-white diamond surround and the smouldering, near-black dial surface. White Rolesor — Oystersteel and 18 ct white gold — provides the structural framework, with the white gold elements accentuating the cool, contemporary character of the dark grey dial.

Calibre 2236 animates this 31 mm Datejust, bringing with it Rolex's Syloxi silicon hairspring — a material that is both non-magnetic and highly stable across a broad temperature range, providing a meaningful technical advantage over traditional lever-escapement hairsprings. The movement's 55-hour power reserve is delivered through a high-efficiency Perpetual rotor system, and Superlative Chronometer certification ensures daily accuracy within ±2 seconds. The Oyster case's hermetic construction guarantees water resistance to 100 metres, making this jewel-set watch considerably more robust than its appearance might suggest.

The dark grey diamond dial within the 278344RBR family represents a bold departure from the more traditionally feminine white or mother-of-pearl options, and it has resonated strongly with contemporary collectors who seek a luxurious yet directional aesthetic. The visual drama of diamonds set against a deep grey background gives this watch an almost architectural quality — restrained in colour, yet extravagant in material. It is a watch that rewards close examination, the diamonds shifting from cold silver to warm fire depending on the light source.