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25 of the Priciest Celebrity Engagement Rings

The Knot estimates the values of 25 celebrity engagement rings, led by Grace Kelly’s Cartier ring. Here’s the ranking—and why these prices are not appraisals.
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The Knot’s ranking of 25 celebrity engagement rings places Grace Kelly’s first, at an estimated $38.8 million, followed by Jackie Kennedy Onassis’s at $22 million. Those figures are editorial estimates, not a verified set of appraisals: published lists disagree, and a documented auction sale is not the same thing as a present-day estimate.

How to read the prices

The Knot says it compiled its list using expert estimates because exact values are not known for every ring. The dollar amounts below are therefore attributed to The Knot, not presented as confirmed purchase prices or independent appraisals. Its article was accessed October 4, 2026. A September 25, 2020 WeddingWire list gives substantially different estimates for some rings, including Grace Kelly’s and Blake Lively’s. Neither source establishes a shared valuation date or method, so the ranking is best understood as The Knot’s editorial ordering rather than a definitive global order.

Carat figures and design details are also reported descriptions, not uniformly verified specifications. Carat weight alone cannot settle a price comparison: cut, gemstone, setting, designer, provenance, and the valuation method all matter, and the sources do not provide consistent details for every ring.

The 25 priciest celebrity engagement rings, according to The Knot

These are The Knot’s listed estimates, in its ranking order. Details are included where the source reports them; the absence of a detail here does not establish that it is unknown elsewhere.

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  1. Grace Kelly — $38.8 million. The Knot describes a Cartier emerald-cut center stone of 10.48 carats, flanked by two baguette stones, presented before Kelly’s 1956 marriage to Prince Rainier III. The publisher attributes its present-day estimate to Jewellry Box.
  2. Jackie Kennedy Onassis — $22 million. The Knot describes Aristotle Onassis’s 40-carat Lesotho III diamond ring. It reports that the ring sold at auction for $2.6 million in 1996 and gives a present-day estimate of about $22 million.
  3. Mariah Carey — $10 million. The Knot says James Packer presented Carey with a 35-carat emerald-cut diamond on a platinum band in 2016, designed by jeweler Wilfredo Rosado. Rosado called it “the most challenging piece of jewelry I’ve ever designed,” according to The Knot.
  4. Elizabeth Taylor — $8.8 million. The Knot lists this estimate for Taylor’s engagement ring. Separately, the Gemological Institute of America reported that Taylor’s 33.19-carat diamond sold for $8.8 million at auction in 2011. That is a historical sale result for the diamond, not a current appraisal of the complete ring.
  5. Anna Kournikova — $5.4 million.
  6. Beyoncé — $5 million. The Knot describes a 24-carat emerald-cut diamond with a platinum split-shank setting, designed by Lorraine Schwartz.
  7. Jennifer Lopez — $5 million.
  8. Katy Perry — $5 million.
  9. Kim Kardashian — $4 million.
  10. Paris Hilton — $2 million.
  11. Serena Williams — $2 million.
  12. Blake Lively — $2 million. WeddingWire’s September 25, 2020 list instead estimates her ring at $2.5 million.
  13. Ciara — $2 million.
  14. Lady Gaga — $2 million.
  15. Kate Upton — $1.5 million.
  16. Jennifer Aniston — $1 million.
  17. Gabrielle Union — $1 million.
  18. Amal Clooney — $750,000.
  19. Olivia Culpo — $600,000.
  20. Hailey Bieber — $500,000. The Knot describes a yellow-gold solitaire with a stone estimated at 4 to 8 carats and a price estimate of up to $500,000, depending on clarity.
  21. Kate Middleton — $400,000.
  22. Sofia Richie — $400,000.
  23. Scarlett Johansson — $400,000.
  24. Meghan Markle — $350,000. The Knot describes a roughly six-carat, three-stone ring designed by Prince Harry, with a center stone sourced from Botswana. It says the setting was redesigned in 2019.
  25. Carrie Underwood — $150,000.

Why celebrity-ring rankings disagree

The estimates are not a single, independently documented dataset. For example, WeddingWire’s September 25, 2020 list puts Grace Kelly’s ring at $4.06 million, compared with The Knot’s $38.8 million present-day estimate. WeddingWire also lists Mariah Carey’s ring at $10 million and Blake Lively’s at $2.5 million; The Knot lists Carey at $10 million and Lively at $2 million. Those variations show why a price should be read with its publisher and date attached, rather than treated as a settled market value.

The distinction between an estimate and a sale matters, too. The $8.8 million GIA reports for Taylor’s 33.19-carat diamond was an auction result in 2011. It is not interchangeable with an estimate for a complete ring today. Auction outcomes, current estimates, and the values assigned by editorial lists answer different questions.

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What the designs can—and cannot—tell you

The reported descriptions point to a range of styles: emerald cuts appear in the descriptions of Kelly’s, Carey’s, and Beyoncé’s rings; Markle’s is described as a three-stone design; and Bieber’s as a yellow-gold solitaire. These details can provide broad style inspiration, but they do not make a retail ring equivalent to a celebrity’s custom piece. Stone specifications, craftsmanship, setting, provenance, and the basis of any valuation vary, and the cited lists do not document all of them consistently.

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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