In 1917, French jeweler Pierre Cartier used a pearl necklace worth $1 million and purchased a mansion on Fifth Avenue for just $100, which became one of New York’s most famous luxury landmarks.
Using a double-stranded pearl necklace and paying just $100, French jeweler Pierre Cartier beat out some of New York’s most powerful real estate families to buy a six-story mansion on Fifth Avenue that is now worth hundreds of millions of dollars.The historic deal, completed in 1917, transferred ownership of the grand Renaissance-style home at 653 Fifth Avenue from wealthy railroad and steamship heir Morton F. Plant to the French luxury jewelry company.While Gilded Age families like the Rockefellers and Astors spent millions building Manhattan properties, Cartier took a simpler approach: Plant’s wife, Maisie Plant, had a strong desire to own a specific piece of jewelry.The agreement transforms a private aristocratic residence on the southeast corner of Fifth Avenue and 52nd Street into one of the world’s most famous luxury stores. It gave Cartier a permanent and powerful presence in the American market. The unusual deal combines business strategy, personal aspirations and a luxury brand. Such transactions were possible in the early 20th century, when luxury goods were closely associated with status and emotion rather than just financial value. Both sides believe they have achieved what they wanted.
High Jewelry 2016, a tribute to the mansion built by the necklace.
The Million Dollar Obsession of the Gilded Age
In the early 20th century, natural pearls collected from the ocean were considered rarer and more valuable than diamonds. Pierre Cartier spent years searching for and carefully matching 128 natural pearls to create the perfect double-strand necklace.Each pearl is selected based on its size, color and shape. Creating such flawless pearls was extremely difficult because cultured pearls were not yet widely available. The necklace, complete with a Cartier-designed diamond clasp, is worth an incredible $1 million, more than the estimated value of the Fifth Avenue mansion itself.At the same time, Pierre Cartier wanted to make Cartier a major luxury brand on Fifth Avenue. This limestone, marble and granite mansion is exactly the kind of prestigious location that would enhance the brand’s reputation in the United States.When Cartier discovered that the wealthy Plante family planned to move further uptown, he saw an opportunity. He made an unusual suggestion to Morton Plant. Maisie Plant had admired Cartier’s famous pearl necklace for years, and her husband wanted to grant her wish.The final agreement called for Cartier to give away the necklace and a small sum of $100 in cash in exchange for ownership of the entire residential building.
Cartier’s New York luxury palace, renovated but timeless
The collapse of the pearl market
However, the value of both assets has changed dramatically over time. Soon after the deal was completed, Japanese cultured pearls entered the global market in large quantities. This reduces the rarity of natural pearls, causing their value to drop dramatically.A necklace once considered an unparalleled treasure has become less valuable due to new technology and changing consumer preferences. When the estate of Maisie Plant offered the famous two-strand necklace at auction in 1957, it sold for just $157,000.The mansion experienced the opposite fate. Its value continues to grow, making it one of the most important luxury locations in the United States. The building became Cartier’s New York headquarters, bringing together the brand’s history, fine jewelry collection, wealthy clientele and Fifth Avenue reputation.In 2001, New York City officially named the nearby intersection Place de Cartier. The decision shows how closely the site is linked to the French jewelry company.Originally a private residence for a wealthy family, it later became a landmark closely associated with Cartier, and even the surrounding area was named after the company.
Portrait of Maisie Plant, the young wife of Morton Plant, wearing a Cartier natural pearl necklace
Interior of modern luxury house
More than a century later, Cartier remains associated with 653 Fifth Avenue, although the company now operates in the building through a long-term lease rather than owning the property outright. The Cartier Building contains approximately 55,000 square feet of retail and customer space.A major renovation led by Parisian designer Laura Gonzalez has brought the mansion’s original history into a modern luxury store. A portrait of Maisie Plant still hangs in the building, overlooking the Maisie Plant Salon, which commemorates the pearl-loving woman who helped Cartier acquire its fortune.The building is divided into different luxurious parts. Morton Plant’s former private music room has been transformed into a fine jewelry reception area. The building also includes a private bridal chamber, dining room and champagne-colored VIP pavilion.The upper floor houses the customer service area and specially designed rooms named after famous Cartier clients and cultural figures, including Gary Cooper, Andy Warhol, Alberto Santos-Dumont, Princess Grace of Monaco and Elizabeth Taylor.Today, the Cartier Fifth Avenue flagship store attracts collectors and luxury customers from all over the world. The building remains a symbol of an era in which jewelers could trade rare collections of pearls for a permanent place in New York history.
