Rolex Datejust White Rolesor — Black Sunbeam Roman Dial, 46-Diamond Bezel | Ref. 178384

Within the 178384 reference family, the black sunbeam roman dial variant stands apart through the application of a sunburst-brushed finishing technique that introduces directional luminosity to what could otherwise be a flat black surface. The sunbeam treatment causes the dial to shift in character depending on angle and light source — appearing near-black under diffuse lighting and revealing a dynamic, almost metallic character under directional light. Combined with the 46-stone factory diamond bezel and White Rolesor case construction, the result is a 31mm Datejust with considerable depth and visual complexity.

The Calibre 2235 — the movement associated with the 178xxx Datejust 31 generation — provides reliable horological underpinning. Equipped with a Parachrom hairspring for improved resistance to magnetic fields and a Paraflex shock absorber for impact resilience, the 2235 exemplifies Rolex's philosophy of incremental mechanical refinement. The five-piece Jubilee bracelet in White Rolesor steel and white gold offers the bracelet's characteristic wrist drape and complements the bicolour case aesthetic.

Among the 178384 variants, the sunbeam dial configuration has a narrower production footprint than the more common lacquer black, which translates into relative scarcity on the secondary market. Buyers who have experience across the Datejust 31 range often identify the sunbeam finish as the more interesting choice for its light-responsive character. For a pre-owned purchase, the dial condition is critical: the sunbeam texture is particularly unforgiving of scratches or polish marks, so surface integrity commands a meaningful premium over worn examples. Overall, this is a configuration that rewards attentive ownership.