31.62-Carat ‘Azure Blue’ Diamond Sells For $8M+ at Christie’s
It was a banner day for blue gemstones, with another blue diamond topping $8 million and a 41-carat sapphire going for $2.3 million.

The second highest-grossing lot at the sale was another blue diamond, this one a 5.04-carat fancy vivid blue marquise brilliant-cut diamond, which achieved $8.1 million.
Both diamonds had a pre-sale estimate of $6.5 million to $8.5 million.
All told, Christie’s Magnificent Jewels auction totaled $49.7 million with every lot sold and blue gemstones making a particularly strong showing.
In addition to the two blue diamonds topping $8 million, a 41.29-carat Sri Lankan sapphire and diamond ring sold for $2.3 million against a high-end estimate of $800,000 after “spirited bidding” from nine telephone bidders, multiple online bidders, and in-room bidders, Christie’s said.
A Graff ring featuring a 30-carat cushion mixed-cut Sri Lankan sapphire flanked by heart-shaped diamonds achieved $1.8 million, more than double its estimate.
Additionally, a 15.49-carat Kashmir sapphire mounted in a platinum ring (pictured above) with pavé diamond accents sold for $2.1 million.
Claibourne Poindexter, Christie’s head of jewelry for the Americas, said, “Achieving 100 percent sold is a powerful testament to the appetite of today’s collectors and to the exceptional, carefully curated assemblage presented in this sale.
“From rare blue diamonds to extraordinary sapphires and rubies, the strength of demand across categories—particularly colored stones—underscores the global enthusiasm for jewels of beauty, rarity, and provenance.”
A handful of private collections also were featured in the sale.
From “The Joanna Carson Collection: A Legacy of Glamour and Giving” a sapphire and diamond ring sold for $508,000, blowing away its pre-sale estimate of $50,000 to $70,000.
Carson was a model, philanthropist, and Broadway producer who was married to “The Tonight Show” host Johnny Carson in the ‘70s and ‘80s.
She died in July 2025, and another collection of her jewelry went up for auction earlier this year in Los Angeles.
A pair of sapphire and diamond pendant earrings from the same collection garnered $457,200 against a low estimate of $100,000, and an emerald and diamond ring sold for $368,300 against a low estimate of $50,000.
A pair of David Morris ruby and diamond pendant earrings, one of three lots in “Exceptional Jewels from the Collection of Bridget Rooney Koch,” realized $1.4 million, doubling its low estimate.
Koch is the granddaughter of Art Rooney, legendary founder of the Pittsburgh Steelers.
From the “Property from the Collection of Irene Roosevelt Aitken,” a retro Van Cleef & Arpels diamond and gold bracelet was a highlight, selling above estimate for $317,500.
The bracelet once belonged to French-American opera singer Lily Pons.
A curator and patron of the arts, Aitken was the wife of John Aspinwall Roosevelt, President Franklin D. Roosevelt’s youngest son.
Following his death, she married recently widowed artist Russell Barnett Aitken. His late wife was the sculptor Annie Laurie Crawford, later Aitken, after whom the Metropolitan Museum of Art’s British Galleries are named.
Per Irene’s final wish, proceeds from the sale will benefit the Met, the Frick Collection, and the Morgan Library and Museum.
From the collection of Gay Hugo-Martinez, a prominent former federal prosecutor and civic leader in Southern California, a bow brooch from the Art Deco era sold for $241,300, tripling its low estimate of $80,000.
The top lot from the collection of American philanthropist Lorinda Payson de Roulet was an antique natural pearl and diamond brooch, which sold for $1.2 million against an estimate of $500,000 to $700,000.
See more results from the sale on Christie’s website.
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