Brooke Astor’s Diamond Jewelry Was the Height of Mid-Century Glamour
A collection as refined and powerful as the woman herself.
Brooke Astor (Courtesy of The Cecil Beaton Studio Archive at Sotheby’s)
When you hear the name Astor, you can’t help but think of immense wealth, history, and luxury. But the great Brooke Astor once said, “Money is like manure; it’s not worth a thing unless it’s spread around.” Though direct, the quote arguably shows her immense generosity when it came to her finances, making her one of the most prolific philanthropists of the 20th century.
This was also evident in her jewelry choices. As one of the most recognizable figures in New York society for decades, she became a leader in philanthropy, civic leadership, and style. Kosta Theochari, general manager and jeweler behind MDT Design, tells Only Natural Diamonds, “Brooke Astor had a jewelry style that was elegant, classy, and refined, which was typical of the New York style of that time. She generally didn’t wear loud, attention-grabbing pieces but was more refined in her look rather than being over the top. Her three-strand pearl necklace was a direct sign of this. Yes, the piece was large, but it oozed class and high sophistication. “
Meet the Experts
Kosta Theochari, co-owner and managing director of MDT Design, is a qualified jeweler with decades of hands-on experience in diamond grading, bespoke design, and high jewelry craftsmanship. Having trained in his family’s workshop since childhood, he combines deep technical expertise with a refined design sensibility,
Emily Otranto is the research and content manager at M.S. Rau, the renowned New Orleans–based gallery specializing in fine jewelry, art, and antiques. Her love for history, literature and art lead her to pursue two bachelor’s degrees in History and Secondary Education, and a Masters in American Studies.
Brooke Astor’s jewelry reflected that world: elegant rather than ostentatious, historic yet unmistakably glamorous. Ahead, explore her life and the natural diamond jewels she treasured.
How Brooke Astor Became a New York Society Legend
Born Roberta Brooke Russell in 1902 in New Hampshire, she spent her early years in Hawaii, Panama, and China before coming of age while her father served as the 16th Commandant of the U.S. Marine Corps. Though she married John Dryden Kuser at 16 and had her only child at 24, Astor became an accomplished writer, contributing to Vogue and Town & Country.
The marriage was over by 1930, at which point Astor relocated to New York City from Washington, D.C. Her second marriage to Charles Marshall lasted until he died in 1932, and then shortly after, she married Vincent Astor, heir to the fortune of financier and real estate developer John Jacob Astor IV, who died on the Titanic in 1912.
It was during this marriage that she became a prominent figure in New York City and an active philanthropist. Her close friends included Jacqueline Kennedy Onassis, Oscar and Annette de la Renta, Henry Kissinger, and David Rockefeller, who was the executor of her estate. A fixture of Park Avenue (her apartment had 14 rooms), she also had her beloved miniature Dachshunds. Her last dog outlived her, reportedly reaching age 21 (approximately 147 in dog years), and died in 2007, just months after Astor, who passed away at 105.
When Vincent Astor died in 1959, Brooke Astor became the president of the Vincent Astor Foundation and helped direct nearly 100 grants annually to charitable organizations. She also wrote two novels and two autobiographies.
Over the years, her jewelry collection grew and became a part of her powerful aesthetic as one of New York City’s most influential figures, wearing many of her pieces late into her long life.
”What stands out most is the level of craftsmanship and taste. She collected from the very best houses—Cartier, Van Cleef & Arpels, Verdura, Tiffany, David Webb, Boucheron, and Bulgari—and chose pieces that were both luxurious and inventive. There is a sense that she spared no expense, but also that she bought with a highly trained eye,” says Emily Otranto, Research & Content Manager at M.S. Rau. “In Astor’s world, jewelry was an essential part of public life. She was not only a philanthropist but a major patron of the arts, and her appearance reflected that role. At galas, charity events, and civic occasions, a collection like hers conveyed presence, discernment, and social confidence.”
Brook Astor’s Rare Emerald Engagement Ring
Arguably, the most famous piece in Brooke Astor’s collection was her emerald engagement ring, which sold for $1.2 million at auction, far exceeding its estimate. The ring features a 22.84-carat modified emerald-cut emerald set in platinum, flanked by eight baguette-cut diamonds weighing approximately 0.90 carats in total. According to Otranto, emeralds have almost always been associated with royalty.
“I think it was no accident that her engagement ring with Vincent Astor, her third husband, was a monumental emerald, paired with an exquisite green satin gown to match. Astor knew that it being her third marriage meant some people might expect her to approach it a bit demurely, but she was marrying an Astor after all! Emeralds paired with diamonds are anything but demure, if you ask me,” she says.
An emerald engagement ring of this scale was “highly unusual, even among elite collectors,” according to Otranto, particularly at a time when diamonds were becoming the standard. It would be decades before Princess Diana would “shock the world” with her sapphire engagement ring, making Astor’s choice in the early 1950s all the more distinctive. Selecting a 22.84-carat emerald was a deeply individual statement, one that spoke to “confidence, originality,” and a willingness to embrace the historical gravity of the storied emerald.
Kosta notes that choosing an emerald of this scale was an exceptionally rare decision. “Emeralds were used more commonly on dress pieces, collars, and brooches, but most opted for diamonds to make their engagement rings. Large emeralds are rare, as most emeralds, when found, are naturally heavily included. The chances of finding an emerald in a large size, strong, vivid green tones, and minimal inclusions are highly unlikely, making this stone one desired by collectors.”
Brooke Astor’s Van Cleef & Arpels Crossover Diamond Ring
Another standout from the sale was a Van Cleef & Arpels crossover diamond ring from 1963, designed in a refined Toi et Moi style. It features two exceptional round diamonds—one weighing 5.22 carats (D color, VVS2) and the other 5.71 carats (E color, VS1), with one classified as a rare Type IIa diamond. Framed by marquise– and baguette-cut diamonds, the design reflects the house’s signature balance of technical precision and understated elegance. As one of the maisons Astor collected most avidly, the piece underscores her longstanding relationship with Van Cleef & Arpels and her instinct for exceptional diamond quality and craftsmanship.
Brooke Astor’s Van Cleef & Arpels Diamond Bracelet
Astor was known to favor diamond bracelets for evening, often stacking or pairing them with her signature brooches. A striking example of Van Cleef & Arpels’ technical mastery, this diamond bracelet features a flexible platinum strap set with an extraordinary 396 round diamonds totaling approximately 90.50 carats. The design reflects the maison’s mid-century innovation in creating fluid, fabric-like jewelry that moves effortlessly with the wearer.
Brooke Astor’s Bulgari Emerald and Diamond Necklace
When Brooke Astor’s jewels went to auction in 2012, this emerald and diamond necklace by Bulgari was a major highlight, selling for $686,500. A gift from her husband, the circa-1959 necklace features a flexible composition of 13 emerald drops weighing approximately 71 carats, enhanced by 14 cabochon emeralds totaling approximately 41 carats and 14 marquise-cut diamonds weighing approximately 8.5 carats, and set throughout with numerous round diamonds totaling roughly 50 carats.
“Large emeralds are especially prized, as gem-quality examples rarely occur in significant size with strong color and attractive clarity. They are naturally more included and delicate than diamonds, so finding an emerald that is both sizable and visually compelling is exceptional,” Otranto says.
Theochari notes that this necklace reflects Bulgari’s emerging identity of strong colors, unique gemstone arrangements, and the high use of cabochon-cut gemstones. “In the 1950’s Bulgari started to embrace a distinct Roman styling that leans towards rich color contrast and larger scaled pieces.”
Brooke Astor’s Verdura Emerald and Diamond Earclips
These exquisite Verdura Emerald and Diamond Earclips were set with two round cabochon emeralds weighing approximately 14.25 carats. They were framed and mounted with round and marquise-shaped diamonds totaling approximately 19.90 carats, creating a bold yet balanced composition. Known for his whimsical and sculptural approach to design, Verdura brought a distinctly modern sensibility to traditional gemstones, which is something that clearly resonated with Astor’s taste.
Otranto tells OND, “Both Verdura and Van Cleef & Arpels were central to shaping mid-century jewelry design, though in different ways. Van Cleef brought technical refinement and elegance, while Verdura introduced a more imaginative, expressive, and distinctly stylish approach.”
Brooke Astor’s Collection of Diamond Brooches
Brooke Astor had a particular affinity for elaborate diamond brooches, favoring the form as both a personal signature and a subtle expression of taste. Her collection ranged from nature-inspired designs to more graphic compositions, including whimsical creations like the iconic seaflower brooch designed by Jean Schlumberger for Tiffany & Co., an artist beloved by style icons such as Jacqueline Kennedy Onassis, Bunny Mellon, and Diana Vreeland.
Astor also owned a number of Van Cleef & Arpels leaf brooches set with sapphires and emeralds, reflecting the maison’s mid-century mastery of stylized naturalism and versatility in colored gemstones. Whether floral, animal, or abstract in design, her brooches captured the full breadth of mid-century high jewelry.
Brooke Astor’s Van Cleef & Arpels Emerald and Diamond Brooch
Another stunning piece that Brooke often wore with the emerald and diamond earclips was this platinum, emerald, and diamond brooch by Van Cleef & Arpels, which ultimately sold for well over its estimate at $254,500. Designed as a stylized flowerhead, the brooch centers on a striking 9.68-carat square emerald-cut emerald, framed by round diamonds weighing approximately 13.45 carats. It is further set with 15 pear-shaped and 40 marquise-shaped diamonds totaling approximately 14.20 carats.
The design reflects the maison’s mid-century mastery of combining vividly colored gemstones with meticulously set diamonds, a hallmark of its high jewelry creations in the 1940s and 1950s. Emeralds, long associated with royalty and prestige, were frequently paired with diamonds by the house to heighten both contrast and (of course) sparkle.
Brooke Astor’s Van Cleef & Arpels Yellow Diamond and Coral Lion Brooch
A standout example of Astor’s playful yet refined taste was a Van Cleef & Arpels lion brooch from 1968, designed as a reclining big cat perched on a coral branch. The lion is set with approximately 8 carats of yellow diamonds, with ruby eyes and enamel detailing that lend a lifelike quality to the piece. Notably, the brooch is articulated, with subtle movement in the tail and legs—an element that reflects the maison’s mid-century fascination with whimsy and technical ingenuity. Beyond its craftsmanship, the lion motif also carries a deeper resonance, echoing the iconic lions of the New York Public Library, one of the institutions Astor championed throughout her philanthropic life.
Brooke Astor’s Verdura Cultured Pearl and Diamond Tassel Necklace
A more classic expression of Astor’s style can be seen in this Verdura pearl and diamond necklace from 1955, composed of two strands of cultured pearls gathered at one side by a diamond-set foliate clasp, suspending elegant tassels. Pearls were a signature of Astor’s personal style and a defining staple among mid-century socialites, also worn by Truman Capote’s “swans” like Babe Paley, Slim Keith, and C.Z. Guest as symbols of polish, discretion, and inherited elegance. In an era when diamonds signaled glamour, pearls conveyed something quieter but equally powerful: taste, restraint, and social confidence. For Astor, they offered a softer counterpoint to her more dramatic jewels.
The Enduring Influence of Brooke Astor’s Jewelry
What is especially significant about Astor’s jewelry collection is how fully it reflected the taste and values of one of New York’s most influential figures—and a legend in her own right. When her jewels were sold at Sotheby’s in 2012, the auction realized more than $19 million in total, with proceeds benefiting the charitable institutions she championed, including the New York Public Library, the Metropolitan Museum of Art, the Morgan Library & Museum, and the Animal Medical Center of New York.
A philanthropist until the very end, Astor ensured her legacy extended far beyond society, reinforcing her lifelong commitment to giving. At the same time, her collection stands as a remarkable snapshot of mid-century natural diamond jewelry at its most refined.
“Her collection belongs among the great American society jewelry collections of the 20th century. The closest comparison that comes to mind is Elizabeth Taylor’s collection, not because their tastes were identical, but because both reflected exceptional caliber, strong personal vision, and the highest level of collecting,” says Otranto.
