Rolex Datejust 31 31 mm 278384RBRSSJ Steel/White Gold/Diamonds Silver

The Rolex Datejust is one of the most storied timepieces in watchmaking history, and the 31mm midsize variant occupies a particularly refined position within that lineage. First introduced as a concept in 1945, the Datejust pioneered the automatic date display at 3 o'clock — a feature that became an industry standard — and the line has since expanded into a broad family of sizes and configurations. The 31mm case size sits between the classic 28mm Ladies Datejust and the full-size 36mm, offering a versatile fit that suits a wide range of wrist sizes without sacrificing any of the model's architectural presence.

Reference 278384RBRSSJ represents a thoroughly jeweled interpretation of the Datejust 31. The case and bracelet are constructed in Rolex's proprietary Oystersteel — a 904L stainless steel alloy prized for its exceptional corrosion resistance and mirror-bright polish — combined with 18k white gold elements that add luminous contrast. The result is a two-tone construction that reads as simultaneously sporty and dressy, a balance Rolex has mastered over decades.

The dial of the 278384RBRSSJ is finished in silver, a clean and timeless choice that catches light without overwhelming. Index hour markers provide legibility while maintaining the dial's elegant, uncluttered character. Framing the dial is the diamond-set bezel, one of the most visually commanding features of this reference: individually set stones encircle the watch, scattering light across the wrist and lending the piece an undeniable haute-joaillerie quality. This bezel variant is indicated by the 'RBR' designation within the reference number, signifying brilliant-cut diamonds.

The watch is powered by an automatic movement, ensuring reliable self-winding performance through the motion of the wearer's wrist. The Oyster case construction provides 100 meters (330 feet) of water resistance, meaning the 278384RBRSSJ is not merely a display piece — it can accompany its owner through the demands of daily life without reservation. The Jubilee bracelet, a five-piece link design introduced alongside the original Datejust in 1945, completes the package with its characteristic suppleness and comfortable drape on the wrist.

For collectors and enthusiasts searching to buy the Rolex Datejust 31 278384RBRSSJ online, Bizak & Co. offers expert guidance, transparent sourcing, and the attentive service of a specialist dealer. Whether you are acquiring your first Rolex or adding a jeweled complication to an established collection, the Datejust 31 in this diamond-bezel configuration represents enduring value and timeless style. Reach out to the Bizak & Co. team to discuss availability, condition details, and how to make this exceptional timepiece yours.