Rolex Lady-Datejust 28 Yellow Gold — Cornflower Blue Stripe Diamond Index Dial, 44-Diamond Bezel | Ref. Lady-Datejust 28

Among the most captivating expressions in Rolex's Lady-Datejust family, this 28 mm example in 18-carat yellow gold presents a dial of exceptional chromatic and lapidary distinction. The cornflower blue stripe pattern — a delicate, graduated sunburst of cool azure — draws an immediate parallel to the finest enamel and lacquer dials of horological antiquity, yet is executed with Rolex's characteristically modern precision. Diamond indices occupy each hour position, their cold brilliance providing luminous counterpoint to the warm yellow gold of the case and the jewelled blue ground. A 44-diamond bezel encircles the 28 mm Oyster case, each stone individually set to form a continuous arc of brilliance that frames the dial with understated opulence.

The movement within is Calibre 2236, Rolex's most contemporary in-house ladies' calibre and a significant milestone in precision engineering at reduced scale. The 2236 incorporates the Syloxi hairspring — fabricated from silicon via a photolithographic process — which offers excellent isochronism, is entirely insensitive to magnetic fields, and maintains stable performance across temperature extremes. With 55 jewels and a 55-hour power reserve, the 2236 delivers performance credentials that comfortably exceed those of preceding generations. The screw-down Twinlock crown and Oyster case ensure 100 metres of water resistance.

The Lady-Datejust 28 has undergone a significant reappraisal among collectors since Rolex refreshed the reference with the Calibre 2236. All-yellow-gold examples with coloured dials — particularly those featuring the cornflower blue palette — command a strong premium and attract buyers who understand the rarity of combining a precious case metal, a high-quality coloured dial, and the house's newest ladies' movement. For the knowledgeable collector, this piece represents precisely the kind of confluence of factors that drives long-term appreciation.