Rolex Datejust Lady 31 31 mm 278240BDJC Steel/White Gold/Diamonds Black Rolex Datejust Lady 31 31 mm 278240BDJC…

Reference 278240BDJC

Full watch configuration

Rolex Datejust Lady 31 31 mm 278240BDJC Steel/White Gold/Diamonds Black

$11,066.00 $11,899.00
Requested condition
Brand New
Requested accessories
Full Set

By Rolex

Sourced to order. We confirm the watch, condition and final price before purchase. Reference images shown.

Sell or trade a watch

Eligible watches: 90-day returns for store credit only. Brand-new watches and other exclusions are final sale. Return terms.

Rolex Datejust Lady 31 31 mm 278240BDJC Steel/White Gold/Diamonds Black

Current Catalogue Asking Price:

Your Offer

$

Submit your offer for review. Availability and the final price require confirmation.

Preferred Contact Method
I have a trade-in / add a note

Reserve with $200

Rolex Datejust Lady 31 31 mm 278240BDJC Steel/White Gold/Diamonds Black

Your $200 deposit is applied to the watch’s purchase price. It is refundable only if Bizak & Co. cannot fulfill your order.

Estimated remaining balance: $. Pay by bank wire or cryptocurrency after we confirm your watch and final invoice. Shipping and applicable taxes are additional.

Shipping details · Return terms

Speak with a Bizak & Co. specialist about this piece

|Call or Text

The Rolex Datejust Lady 31 reference 278240BDJC is a 31mm automatic wristwatch crafted in stainless steel and white gold, featuring a striking black diamond dial and a custom diamond-set bezel on the iconic Jubilee bracelet. This reference blends Rolex's enduring Datejust architecture with luxurious diamond appointments, making it one of the most sought-after midsize dress watches in the market today.

What sets the 278240BDJC apart is the seamless fusion of brilliant diamond detailing on both the dial and bezel with Rolex's hallmark precision and build quality, delivering a watch that commands attention in any setting. If you are looking to buy this Rolex Datejust Lady 31 online, contact Bizak & Co. today for availability, pricing, and expert guidance.

Compare it across every Datejust Lady 31 reference we carry, or browse the full Rolex collection at Bizak & Co.

Buy this Datejust Lady 31, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

Sourced. We can get. Hero pending correct 278240BDJC asset.

Not the exact one you’re looking for?

Source your dream watch

Learn More

The Rolex Datejust is one of the most enduring icons in watchmaking history, and the Lady 31 interpretation — reference 278240BDJC — represents the line at its most glamorous. Introduced as a midsize evolution of the classic Datejust family, the 31mm case occupies a versatile position between a traditional ladies' watch and a full-size timepiece, appealing to a wide range of collectors and enthusiasts who want presence on the wrist without an oversized profile. The Datejust's legacy of combining reliable automatic movement with refined aesthetics makes this reference immediately legible to any serious watch buyer.

The case of the 278240BDJC measures 31mm in diameter and is constructed in a combination of stainless steel and white gold, two materials that complement each other beautifully and ensure lasting durability alongside premium visual appeal. The white gold elements introduce a warm luminosity that elevates the watch beyond a purely steel sports piece into genuine luxury territory. Rolex's stringent standards for surface finishing mean every surface — whether brushed or polished — is executed to exacting tolerances.

The black dial is the defining visual centerpiece of this reference. Deep and dramatic, the black diamond-set dial catches light with every movement of the wrist, ensuring the watch reads as luxurious from across a room as it does up close. Diamond hour markers add scintillating texture to the dial, and the contrast between the dark ground and the brilliant stones is a pairing that has proven timelessly desirable. The custom diamond-set bezel frames the dial with an unbroken circle of stones, amplifying the watch's presence and reinforcing its status as a jewel as much as an instrument.

Power is provided by a Rolex automatic movement, reflecting the brand's unwavering commitment to in-house manufacture and long-term reliability. The watch is water resistant to 100 meters (330 feet), which means it is far more than a purely decorative piece — it is a fully functional Rolex that can accompany its wearer through daily life with confidence. The Oyster case construction and the Twinlock crown contribute to that robust protection without compromising the elegant silhouette.

The Jubilee bracelet is one of Rolex's most beloved bracelet designs, originally introduced alongside the very first Datejust in 1945. Its five-piece link construction delivers exceptional flexibility and a fluid, elegant drape on the wrist that few bracelets in watchmaking can rival. On the 278240BDJC it reinforces the dressy, refined character of the watch while remaining supremely comfortable for all-day wear.

At Bizak & Co., we specialize in sourcing and presenting exceptional Rolex references like the Datejust Lady 31 278240BDJC for discerning buyers who know exactly what they want. Whether you are adding to an established collection or purchasing your first diamond-dial Rolex, our team is here to provide transparent, knowledgeable service. Browse our inventory at bizakandco.com or reach out directly to inquire about this reference — we are committed to helping you find the right watch at the right value.

Technical Details
Reference
278240BDJC
Model
Datejust Lady 31
Movement
Automatic
Case material
Two-Tone
Bracelet material
Two-Tone
Dial
Black diamond dial
Case size
31mm
Requested condition
Brand New
Requested accessories
Full Set
FAQ

1. What makes the Rolex Datejust Lady 31 278240BDJC special?
The reference 278240BDJC stands out for its combination of a black diamond-set dial and a custom diamond bezel set in stainless steel and white gold, giving it a level of jewel-like glamour rarely found in a watch this versatile. The 31mm Datejust silhouette ensures the watch is instantly recognizable as a Rolex icon while the diamond appointments elevate it into true luxury territory.

2. What movement powers the Rolex Datejust Lady 31 278240BDJC?
This Datejust Lady 31 is powered by a Rolex automatic movement, consistent with Rolex's commitment to reliable in-house mechanical watchmaking. The automatic winding mechanism means the watch keeps itself running through the natural motion of the wearer's wrist during daily wear.

3. What is the case size of the Datejust Lady 31 ref. 278240BDJC?
The case measures 31mm in diameter, placing it in Rolex's midsize category. This sizing is popular with buyers who want a watch that reads with presence on the wrist without being as large as a full 36mm or 41mm Datejust.

4. Is the Rolex Datejust Lady 31 278240BDJC suitable for everyday wear?
Yes — despite its diamond-set dial and bezel, this watch is built to Rolex's Oyster standards and carries a water resistance of 100 meters (330 feet), making it a genuinely durable daily companion. The Jubilee bracelet is also renowned for its comfortable, flexible fit that holds up well over long periods of wear.

5. What materials and dial does the 278240BDJC feature?
The watch combines stainless steel and white gold case materials with a black diamond-set dial and a custom diamond-set bezel. The pairing of the deep black dial with sparkling diamond indexes and the surrounding diamond bezel creates a high-contrast, luxurious aesthetic that suits both formal and smart-casual occasions.

6. How can I buy the Rolex Datejust Lady 31 278240BDJC from Bizak & Co.?
You can browse and inquire about this reference directly at bizakandco.com or contact our team to confirm current availability and pricing. Bizak & Co. is not an authorized Rolex dealer but specializes in premium pre-owned and gray-market Rolex timepieces, offering knowledgeable, transparent service to buyers across the United States.

Certified Authenticity

Every watch is authenticated before delivery.

Real Family Business

You're buying from genuine people, 30 years in business.

Bizak & Co. Warranty

Every watch is checked by us before shipping.

5 Years Warranty

Every watch you buy from us is backed by our 5-year warranty—because luxury should come with long-term peace of mind.

If anything goes wrong mechanically due to a manufacturing issue, we’ll take care of it. No stress. No surprises.

Because trust isn’t built in a transaction—it’s built over time.

90-Day Returns for Store Credit

Eligible watches may be returned within 90 days for store credit. Brand-new watches and other exclusions are final sale.

Read eligibility, condition requirements, and exclusions.

Insured delivery

Insured shipping

U.S. overnight shipping is $100; international shipping is $500. Dispatch takes 2–3 business days after your wire clears. International transit times vary. Shipping details.

You might also like...