Rolex Lady-Datejust 28 White Rolesor — Silver Diamond Star Dial, Fluted Bezel | Ref. 279174

Constellation dials occupy a unique place in the Datejust catalogue, transforming the chapter ring from a functional index into a gemological display. On the Lady-Datejust 28 in White Rolesor, the silver dial is set with nine diamond markers arranged in star-shaped pavé clusters at each cardinal and intercardinal position, while the ninth marker — Roman numeral IX at the 9 o'clock position — is populated with a diamond constellation of its own. The effect, best appreciated under direct light, is of a miniature firmament captured beneath sapphire crystal: a dial that rewards close inspection without sacrificing legibility at a glance.

The White Rolesor case pairs 904L Oystersteel's extreme corrosion resistance with the lustre of 18-carat white gold in the bezel, crown, and bracelet centre links. The fluted white-gold bezel applies engine-turning to a material already noted for its bright finish, producing a profile that shifts between satin and mirror depending on viewing angle. Twinlock waterproofing and screw-down case back provide the Oyster's 100-metre water resistance, while the double anti-reflective sapphire crystal and Cyclops lens ensure the date display remains readable in any condition. The Oyster bracelet — flat three-piece links in alternating Oystersteel and white gold — completes the Rolesor logic of the reference.

Calibre 2236 powers the 279174, its 27-jewel construction incorporating the patented Syloxi hairspring that eliminates the need for a Parachrom alloy while delivering superior antimagnetic performance. The balance oscillates at 28,800 vph, the movement charges through a bidirectional Perpetual rotor, and power reserve stands at 55 hours — sufficient for a long weekend without winding. Superlative Chronometer certification confirms ±2-second daily accuracy from Rolex's post-casing testing programme, while stop-seconds allows synchronisation to a reference signal. The Oysterclasp with Easylink extension link accommodates seasonal variation in wrist dimension.