Linda Coutu is rejoining the precious metals provider as its director of sales.
Wife of Former Cartier Owner’s Jewelry Heads to Auction
The Danziger family, which owned the brand for four years, tapped Bonhams New York to sell the personal collection of Gigi Guggenheim Danziger next month.

New York--The wife of one of the former owners of Cartier Paris is auctioning off some of her jewelry, and she has tapped Bonhams New York to do it.
On Sept. 19, fine jewelry from the personal collection of Gigi Guggenheim Danziger will go under the hammer as part of the auction house’s Fine Jewelry sale, marking the first time the jewelry has appeared at auction.
The collection features 32 pieces of fine jewelry, including a number of signed Cartier pieces from the 1960s and 1970s, when the Danziger family owned Cartier Paris. The earliest lot dates back to 1957.
She attended Ohio State University from 1941 to 1944, majoring in education, and then moved to Atlanta and finally New York.
She met native New Yorker Edward J. Danziger at a society wedding in 1951. The two married later that year in Mexico and then went on to have two sons, Danny and James.
Edward and his brother, Harry Lee Danziger, were prolific film producers, creating more than 140 feature films in the 1950s and 1960s, as well as hundreds of hours of television. Then in 1958, the Danzigers acquired London’s Mayfair hotel, Grosvenor hotel and the Metropole hotel in Monte Carlo.
Ten years later, in 1968, the two brothers negotiated a secret deal to acquire Cartier Paris. As part of it, they also acquired Cartier shops in Monte Carlo, Cannes and Switzerland.
The Danziger family intentionally kept their ownership under wraps to maintain the Cartier name since the business, up until then, had been family-run.
During their four-year ownership of the brand, they expended the company’s footprint by opening Cartier stores in Hong Kong, Geneva and Munich. The family also traveled extensively around the world as its owners, but returned to America in 1977.
Edward died in March 1999 at the age of 89. Gigi now splits her time between Los Angeles and Palm Beach.
There will be 180 lots available overall at the Bonhams New York sale next month.
Aside from the Danziger collection, one of its highlights is a 16.90-carat step-cut diamond ring set with round brilliant-cut diamond shoulders. It’s expected to sell for between $1.6 million and $2.2 million.
The auction
Meanwhile, a rare Australian black opal and diamond pendant/brooch also will hit the block. The 48.80-carat gem is set within old European-cut diamonds and is estimated to sell for between $200,000 to $300,000.
Another interesting lot is a diamond, emerald and ruby brooch, circa 1900, purchased at a garage sale in Ohio a number of years ago for $8--the second such lot to hit auction this year.
The owner’s daughter was at a jewelry store when she pulled it out and shared the story about how it came into their possession. To her surprise, she was told it was real.
Bonhams had it tested by the Gemological Institute of America, which confirmed the stones were gem quality.
The brooch features an old mine-cut diamond, D color, VS1 clarity, weighing 1.39 carats; a rectangular-shaped emerald originating from Colombia, weighing approximately 1.50 carats; and an oval-shaped Burmese ruby, weighing approximately 0.60 carat.
It has a pre-sale estimate of $20,000 to $30,000.
There also will be signed pieces from Harry Winston, Cartier, René Lalique and David Webb.
All lots in the Sept. 19 Fine Jewelry sale can be seen on Bonhams.com.
The Latest

The Signet Jewelers-owned store, which turned 100 last year, calls its new concept stores “The Edit.”

The supplier has a curated list of must-have tools for jewelers doing in-house custom work this year.

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Footage of a fight breaking out in the NYC Diamond District was viewed millions of times on Instagram and Facebook.


The governing board welcomed two new members, Claire Scragg and Susan Eisen.

Sparkle with festive diamond jewelry as we celebrate the beginning of 2026.

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

The master jeweler, Olympian, former senator, and Korean War veteran founded the brand Nighthorse Jewelry.

In its annual report, Pinterest noted an increase in searches for brooches, heirloom jewelry, and ‘80s luxury.

Executive Chairman Richard Baker will take over the role as rumors swirl that a bankruptcy filing is imminent for the troubled retailer.

Mohr had just retired in June after more than two decades as Couture’s retailer liaison.

Shekhar Shah of Real Gems Inc. will serve as president of the Indian Diamond & Colorstone Association in 2026.

This year’s good luck charm features the mythical horse Pegasus, and is our first Piece of the Week of the new year.

Articles about crime, engagement rings, and a necklace worn in the World Series generated the most interest among readers.

As part of the leadership transition, Sherry Smith will take on the role of vice president of coaching strategy and development.

It marks the third time the country has headed the Kimberley Process. Ghana will serve as vice chair.

The new Bulova x Stetson designs highlight two animals often associated with the American West—the bison and the Texas Longhorn.

Its residency at Yamron Jewelers will run through May 2026.

From influential executives to innovative designers, we pay tribute to the people we said goodbye to this year.

The retailer is expanding into areas with large Indian and South Asian populations.

The Italian brand has opened its first flagship amid the peaks of the Dolomites in Madonna di Campiglio, Italy.

The new curation at the Natural History Museum of Los Angeles County showcases rare gem and mineral specimens in their uncut, natural state.

The couple pleaded guilty to concealing at least $127 million in cash transactions at its precious metals businesses.

Consumers shared concerns about prices, inflation, tariffs, trade, and politics in the survey’s write-in response section.

The new show will take place Jan. 23-25, 2026.

The former BHP Billiton leader and Gemfields chairman is remembered for his influential leadership throughout his 50-year mining career.





















