Independent deals guide
Compare Cyber Monday diamond offers, jeweler ratings and jewelry prices. See whether a Monday promotion improves on the Black Friday weekend deal.
Cyber Monday is November 30, 2026, the Monday after Black Friday. For diamond jewelry, it is another chance to compare the weekend's offers, not a guarantee of an extra discount.
Check whether a Monday promotion changes the final price, adds a gift or simply extends the same terms. We show current offers below and distinguish them from confirmed Cyber Monday promotions.
Some retailer links may be affiliate links, and LabGrownCarats may earn a commission if you buy through them. Source links may be untracked. Compensation does not determine our verdicts, test results, or the evidence we report.
There are no confirmed Cyber Monday offers here right now. You can still compare these current promotions. One highlighted offer per jeweler; the full list includes the others.
30% Off Sitewide*
Code: LD2026 · Ends Sep 8, 2026, 11:59 PM ETUp to 50% Off the James Allen Collection
Ends Sep 15, 2026, 12:59 AM ETReceive Diamond Stud Earrings with Purchase Over $1,000.
Code: DIAMOND · Purchase over $1,000 · Ends Sep 10, 2026, 2:59 AM ETFree 1 ctw Round Lab Grown Diamond Stud Earrings in Sterling Silver with Purchase of $2,000 or More
Purchase of $2,000 or moreWELCOME Discount Code
New subscribers or first orders — check terms · Code: WELCOME · Purchase of $1,000 or moreThere is no reliable answer without comparing the same piece on both dates. Save the product details and final basket price over the weekend. If Monday brings a gift instead of a lower price, decide whether that gift is something you would actually use.
For a ring, compare the diamond and setting together. For earrings, compare total carat weight for the pair. Our diamond price guides help with loose-stone comparisons, but they are not a record of every seller's earlier holiday price.
Our top-rated jewelers
4.7/5★★★★★
Best overall value
4.6/5★★★★★
Best all-round experience
4.5/5★★★★★
Best for design and jewelry
4.5/5★★★★★
Best premium showroom option
4.5/5★★★★★
Best ring-builder testOur ratings reflect our editorial reviews. We may earn a commission from some links.
A short deadline makes it easy to skip details. Check the eligible products, minimum spend and time zone. An offer ending at midnight in the seller's terms may not end at midnight where you live.
If your preferred diamond has sold, compare a replacement's grading report and proportions rather than choosing solely by carat weight. A similar product name or photograph does not make two stones equivalent.
Only if the seller's terms permit it and the basket applies both. Welcome discounts, gift offers and sale prices may exclude one another. Count the saving shown for the actual order, not the sum of several advertised percentages.
November 30 leaves time before Christmas, but it is not a delivery guarantee. Made-to-order rings, resizing and engraving can take longer than ready-to-ship gifts. Check the specific item's arrival estimate and the recipient's return window.
Use our Black Friday guide for the main weekend and our Christmas jewelry deals guide for gift and delivery advice. James Allen offers now belong to Blue Nile's collection; old standalone James Allen codes should not be assumed valid.
Our jeweler ratings and recommendations come from the research and purchases described in the linked reviews. Offers are checked separately: we show the spending requirement and end time when available, and link to the seller's full terms. An advertised saving is not proof of a historical low. We do not reuse expired codes or assume future holiday promotions have been announced.
Check whether a Cyber Monday offer differs from the weekend sale. Compare the final price and delivery date before buying an alternative just because its promotion has a new name.