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Expensive Diamond Ring

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Expensive diamond rings are more than high-jewelry—they are masterpieces of nature and artistry, fetching astronomical prices at global auctions and redefining luxury.

The most expensive diamond ring ever sold is the Pink Star Diamond Ring, which features a 59.60-carat oval-shaped fancy vivid pink diamond. Graded as Internally Flawless and the largest of its kind by the Gemological Institute of America (GIA), it was sold for a record-breaking $71.2 million at Sotheby’s Hong Kong in 2017. The ring was acquired by Chow Tai Fook and subsequently renamed CTF Pink Star[1][3][4].

The next in line is the Williamson Pink Star, a cushion-cut pink diamond weighing 11.15 carats, also internally flawless and intensely vivid in color. This ring set a record for the highest price per carat ever achieved at auction, selling for $57.7 million at Sotheby’s Hong Kong. Pink diamonds of this size and quality are exceptionally rare, with fewer than 1% exceeding 10 carats[1][3].

Other significant entries on the list of the world’s most expensive diamond rings include:

  • The Oppenheimer Blue Diamond Ring, one of the largest and finest vivid blue diamonds, fetching multi-million dollar sales.
  • The Wittelsbach-Graff Diamond Ring, a historic blue diamond with royal provenance from the Kollur Mine in India[3][4].
  • Various fancy colored diamond rings (including blue and purplish pink) regularly setting records at major auctions thanks to their rare hues, clarity, and exceptional carat weights[5].

When it comes to celebrity diamond rings, the most expensive ever belongs to Mariah Carey: a 35-carat emerald-cut diamond, designed by Wilfredo Rosado and valued at $11.4 million. In 2025, Henry Cavill gave Natalie Viscuso an 8-carat oval diamond in a timeless solitaire yellow gold setting, valued at around $1 million[2].

Key factors that drive the price of these rings include:

  • Carat weight: Larger diamonds command higher prices due to their rarity.
  • Color: Fancy vivid pinks and blues are among the scarcest and most valuable.
  • Clarity and Cut: Stones graded as Flawless or Internally Flawless, especially with perfect symmetry and expert cutting, reach the top tier of valuation.
  • Rarity and historical significance: Diamonds with unique provenance or legacy (such as crown jewels or famous collections) are especially prized[3][4].

Beyond rings, individual diamonds like the Centenary Diamond (estimated value $100 million), the Hope Diamond ($200–250 million), and the Koh-i-Noor are among the world’s priciest and most renowned gems, though many remain in museums or royal treasuries, rather than in private jewelry[4][6].

References

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