Rolex Datejust Yellow Gold — Black Diamond Dial with Fluted Bezel | Ref. 179178

At 26 mm, reference 179178 represents the classic Lady Datejust proportion — a size that predates the expanded 28 mm standard and carries with it decades of Datejust history for smaller wrists. Constructed entirely in 18 ct yellow gold with a fluted bezel and black diamond-set dial, this reference presents as a complete precious-metal dress watch with genuine complications. The diamond hour markers cut against the deep black dial with brilliant contrast, while the yellow gold case and fluted bezel establish clear lineage to the original Datejust design vocabulary.

This reference is powered by Calibre 2235, Rolex's self-winding manufacture movement for the smaller Datejust family, fitted with a Parachrom hairspring and certified as a COSC chronometer. The 26 mm Oyster case in yellow gold maintains the same water resistance and case construction standards as larger Datejust references, ensuring durability that belies the watch's delicate visual presentation. The President bracelet in yellow gold is the traditional companion for this configuration, providing a fluid three-link wearing experience uniquely suited to precious metal Day-Date and Lady Datejust references.

The 179178 appeals to collectors and buyers who favor the historical 26 mm Lady Datejust proportion over the current 28 mm standard. Full yellow gold construction with diamond dials represents the highest tier of factory finish within this size category, and condition of both the dial stones and the bracelet — particularly the clasp and link tightness — are critical value determinants in the pre-owned market. Rolex's consistent approach to dial quality means factory diamond-set examples retain their integrity across decades, making this a sound acquisition for those drawn to this specific configuration.