Rolex 278384rbr-0021 Datejust 31mm Stainless Steel White Gold Diamond Oyster Mint Green Dial Watch

Rolex Datejust 31 — Reference 278384RBR-0021

Introducing the exquisite Rolex Datejust 31 ref. 278384RBR-0021, where gem-setting artistry meets Rolex’s heritage of precision. With its White Rolesor case (steel and white gold), diamond-set bezel, mint green sunray dial, and Oyster bracelet, this timepiece radiates elegance, sophistication, and day-to-day durability.

Case Materials

The 31 mm Oyster case is crafted using Rolex’s White Rolesor construction — a refined melding of Oystersteel with 18 ct white gold. A diamond-set bezel graces the top, giving a halo of brilliance without overwhelming the overall silhouette. Built to Rolex’s Oyster architecture, the case features a monobloc middle, screw-down back, and Twinlock crown, rendering it water resistant to 100 m (330 ft). The crystal is scratch-resistant sapphire and includes the iconic Cyclops lens above the date window.

Dial Visual Character

278384rbr-0021 features a mint green sunray dial, produced via expert brushing that creates delicate radial lines emanating from the center. Under varying light, the surface shifts in tone, offering subtle visual dynamics. Hour markers are in polished white gold (stick or baton style), providing crisp contrast and refined legibility over the green background. The date aperture at 3 o’clock is magnified by the Cyclops lens to ensure easy reading — a hallmark of the Datejust line.

Movement Precision

At its core, Calibre 2236 drives the 278384RBR-0021 — a self-winding mechanical movement designed and manufactured entirely by Rolex. It offers a power reserve of approximately 55 hours. Rolex certifies this reference under its Superlative Chronometer standard, guaranteeing precision to –2/+2 seconds per day after casing. The calibre includes an instantaneous date change mechanism, stop-seconds for precise setting, and internal components refined for stability and shock resistance.

Bracelet Wearability

278384rbr-0021 is paired with Rolex’s robust Oyster bracelet, featuring three-piece solid links in Oystersteel — designed for strength, comfort, and versatility. It is equipped with the Oysterclasp and Easylink 5 mm comfort extension, allowing on-the-fly adjustment to ensure a perfect fit in all conditions. The integration of the bracelet with the 31 mm case results in an elegant and confident wrist presence.

Unique Highlights Selling Points

• The diamond-set bezel brings refined brilliance in a “halo” form — a delicate frame that enhances, rather than overpowers, the overall aesthetic.
• The mint green sunray dial is relatively rare in the Rolex palette, offering freshness, depth, and evolving tonal shifts as light changes.
• Rolesor construction marries the resilience of steel with the luminous accent of white gold — ideal for daily wear that still feels luxurious.
• Calibre 2236 provides modern precision, power reserve, and mechanical resilience in a compact form factor.
• The Oyster bracelet offers sporty strength and comfort — strong links with elegant styling, and the Easylink adjustment adds practical flexibility.
• At 31 mm, the case is carefully balanced — prominent enough to be noticed, yet graceful on many wrist sizes.

In summary, the Rolex Datejust 31 ref. 278384RBR-0021 is a masterclass in subtle luxury. Its mint green dial, diamond bezel halo, robust construction, and refined movement unite to make it a versatile piece — equally suited to elegant evenings, professional environments, or daily wear. A luminous statement without excess, this reference captures the spirit of modern femininity in Rolex’s timeless horology tradition.