The trio of Advent calendars include a version with 18-karat gold and lab-grown diamond jewelry in a red lacquer jewelry box.
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

Created in collaboration with Nymphenburg Porcelain, the lock is part of a four-piece collection that took two years to bring to fruition.

Jewelry industry veteran Alisa Bunger has taken on the role.

The upcoming show provides savvy retailers with the opportunity to stock their cases with best sellers in advance of the holiday season.

The company and industry leader’s two-decade tenure with De Beers will come to a close at the end of the month.


The company will pay 1.5x silver’s current spot price for each pound of silver oxide batteries submitted.

The line includes a “Shadow” series crafted exclusively for the new men’s offering and reimagined styles from the brand’s core collections.

The rough on offer was recovered from a newer area at the Montepuez mine.

The retailer’s new collection of engagement rings and fashion jewelry is set with natural diamonds that are traceable via blockchain.

The champagne colorway in her newest “Ombré” collection combines white and trendy brown diamonds, a departure from her usual vibrant hues.

Kosann partnered with the Museum of Fine Arts, Boston, to create a set of necklaces inspired by the artwork on samurai sword handguards.

Carlos Jose Hernandez and Joshua Zuazo face life in prison for the October 2024 murder of 72-year-old Detroit-area jeweler Hussein Murray.

The brand’s first high jewelry collection, “Tempest” plays with movement while calling to mind the folklore of the sea.

Proceeds from its jewelry raffle will go to a volunteer-run fire and rescue group in the Lightning Ridge area of New South Wales, Australia.

Stuller said the recipients embody the company’s core values, which include community participation and personal and professional growth.

Citizen’s new “Rainell” women’s watch has a raindrop-shaped case and is available with a silver-, gold-, purple-, or green-colored dial.

Amit Pratihari was previously the managing director of De Beers India and Forevermark India.

Members of the Jewelers 24 Karat Club of Southern California will gain access to expanded services, resources, and connections, DCWC said.

Gomez’s jewelry included Tiffany & Co. drop-style earrings while Blanco stacked diamonds from Jacob & Co. on his wrist.

Diamond industry banking veteran Paul De Wachter will take on the role in January 2026.

Taylor Swift flaunts an Elizabeth Taylor-esque gemstone in promo for her new album, “The Life of a Showgirl.”

Its “Quantre Sand” capsule was made using a 3D sand printing technique borrowed from the automotive and aeronautics industries.

Four individuals have been charged in the “takeover-style” robbery of Heller Jewelers last month, and additional charges are expected.

“Radiance and Reverie” will showcase more than 150 jewels from Lane’s personal collection by Tiffany & Co., Cartier, and more.

The month’s birthstones, tourmaline and opal, complement the palette of autumn.

Smith shares the importance of looking at your company with openness and honesty to identify opportunities you may be missing.