Rolex Lady-Datejust 28 Platinum — 44-Diamond Bezel, Dark Grey Roman Dial | Ref. 279136RBR

Reference 279136RBR positions the Lady-Datejust 28 at its most jewelled — a full platinum case paired with a 44-diamond bezel and a dark grey dial set with Roman numeral hour chapters. At 28 mm, this is Rolex's smallest current Datejust case diameter, calibrated for finer wrists while delivering the same waterproof Oyster construction and date functionality as the larger references in the family.

Driving this watch is the Calibre 2236, introduced by Rolex in 2015 and representing the brand's most technically ambitious ladies' movement to date. Its headline feature is the Syloxi silicon hairspring, engineered in-house to be insensitive to magnetic fields and thermal variations, offering a 55-hour power reserve in a movement measuring just 5.35 mm in height. The platinum case, bezel set with brilliant-cut diamonds in an individual claw setting, and President bracelet in matching platinum create a cohesive jewellery-watch that nonetheless meets Rolex's full tool-watch standards.

For collectors seeking the intersection of precious metals, gemstone setting, and Swiss mechanical credentials, the 279136RBR is a benchmark reference. Platinum Lady-Datejusts are produced in limited quantities relative to gold variants, and the dark grey Roman dial — a subtler alternative to the more common white or silver fields — gives this configuration a sense of restrained distinction. It works as both a dress watch and an everyday luxury piece, and its full Oyster waterproofing means it need not be treated with the caution of a purely jewellery-focused timepiece.