Editor’s Note
The “De Beers Cullinan Blue,” the world’s largest blue diamond, has set a new auction record, selling for $57.5 million. This 15.10-carat gem underscores the extraordinary value and rarity of top-tier colored diamonds.
The world’s largest blue diamond, known as the “De Beers Cullinan Blue,” has been sold at auction for $57.5 million. The exceptionally rare 15.10-carat step-cut gemstone achieved a price of approximately $3.8 million per carat.
Classified as a “fancy vivid blue” diamond, the internally flawless stone is considered one of the most significant blue diamonds ever to appear at auction. Its intense color saturation and high clarity contributed to its record-breaking sale.
The sale underscores the continued strength and resilience of the high-end fancy color diamond market, particularly for top-tier blue diamonds, which remain exceptionally rare and sought-after by collectors and investors worldwide.