Auctions

16.9-Carat Diamond Ring Fetches $1.8M at Bonhams

AuctionsSep 21, 2017

16.9-Carat Diamond Ring Fetches $1.8M at Bonhams

Unheated Kashmir sapphires were also a sale highlight, commanding hundreds of thousands of dollars.

20170830_16ct-diamond.jpg
This 16.9-carat, step-cut, type IIa, D color, internally flawless diamond sold to a private buyer for $1.8 million at Bonhams New York Fine Jewelry Sale this week.

New York--A 16.9-carat diamond ring garnered $1.8 million at Bonham’s New York Fine Jewelery Sale Tuesday, falling at the lower end of its pre-sale estimate of $1.6 to $2.2 million.

A private U.S. buyer bought the step-cut, type IIA, D color, internally flawless diamond.

Susan Abeles, head of jewelry for Bonhams U.S., said of the stone: “This is one of the finest examples of a diamond there is, given its rarity, color, cut, clarity and transparency. It was admired widely during our previews in New York, L.A., Geneva and Hong Kong and the diamond was extraordinarily charming.”

Fine jewelry from the personal collection of Gigi Guggenheim Danziger, whose husband owned Cartier for four years, also was part of the auction, including many signed Cartier pieces.

Highlights from the 32 Danziger lots included a Cartier diamond necklace with three rectangular-shaped diamonds serving as its focal point, with round brilliant-cut diamonds set throughout, which fetched $37,500.


A Cartier ruby and diamond brooch, with the center diamond weighing 4.24 carats, garnered $46,000. Danziger wore it to the London premier of “The Godfather.” It was an anniversary present from her husband.


Danziger’s Cartier sapphire and diamond brooch went for $37,500. It featured a cushion-shaped modified step-cut sapphire, weighing approximately 7.10 carats, surrounded by marquise and pear-shaped diamonds.


Several Kashmir sapphires fetched high prices at Bonhams Fine Jewelry sale, including a 5.33-carat cabochon sapphire ring by Stephen Russell that also featured old European cut diamonds. The sapphire had no indications of heat or clarity enhancement. An online buyer paid $235,000 for the piece.


A cushion-shaped, mixed-cut sapphire weighing 5.30 carats and framed by a halo of old European cut diamonds, sold for $230,000. The no-heat sapphire was only expected to fetch between $100,000 and $150,000.


Similarly, an emerald ring made a splash at the auction, garnering $235,000. It featured an oval-shaped, modified brilliant cut 7-carat Colombian emerald flanked by similarly cut fancy vivid yellow diamonds weighing 1.09 carats and 1.04 carats.


Signed jewelry was also a hit with buyers, with a sapphire and diamond clip brooch by Oscar Heyman fetching $87,500 and an enamel and glass Medusa pendant by Rene Lalique selling for $69,500.

And, in what was possibly the most interesting lot of the bunch, a circa 1900 diamond, emerald and ruby brooch purchased at a garage sale for $8 in Ohio five years ago sold for $26,000 after a round of
competitive bidding both in the room and over telephone.

Abeles concluded: “We had a really interesting sale this September, which featured the best diamonds you could buy, several Kashmir sapphires and some wonderful and extremely rare pieces of jewelry from the Art Nouveau and Art Deco periods. These all performed very strongly at the auction along with signed jewelry from names such as Cartier, Oscar Heyman and Raymond Templier. It was notable to see that collectors form all over the world participated in the auction.”

The full results of the sale are available to view on Bonhams website.
Ashley Davisis the senior editor, fashion at National Jeweler, covering all things related to design, style and trends.

The Latest

Saks Fifth Avenue flagship window installation
MajorsJan 02, 2026
Marc Metrick Out as CEO of Saks Global

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

Couture Retailer Liaison Jan Mohr
Events & AwardsJan 02, 2026
Jan Mohr, Couture’s ‘North Star,’ Dies at 71

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

Shekhar Shah Real Gems
SourcingJan 02, 2026
IDCA Elects New President, Board of Directors

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

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

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

Lalaounis good luck charm 2026
CollectionsJan 02, 2026
Lalaounis’ 2026 Good Luck Charm Speaks to Resilience

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

Weekly QuizDec 23, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Collage of NationalJeweler.com’s most-read stories of 2025
EditorsDec 31, 2025
The Top 5 Stories of 2025

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

Becka Johnson Kibby
MajorsDec 30, 2025
Becka Johnson Kibby to Lead Edge Retail Academy

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

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

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

Stock image of rough diamonds from Diavik mine in Canada
SourcingDec 30, 2025
India Chosen as KP Chair for 2026

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

Bulova x Stetson collection
WatchesDec 30, 2025
Bulova, Stetson Collab on Watches With Western Flair

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

Rahaminov Diamonds Pop-Up at Yamron Jeweler
CollectionsDec 30, 2025
Rahaminov Diamonds Pops Up in Florida

Its residency at Yamron Jewelers will run through May 2026.

In Memoriam collage 2025
IndependentsDec 29, 2025
In Memoriam: Industry Friends We Lost in 2025

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

Tanishq Orlando store exterior
MajorsDec 29, 2025
Tanishq Opens New Stores in Florida, Virginia

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

Nanis Madonna di Campiglio Flagship
MajorsDec 29, 2025
Nanis Opens First Flagship Store

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

Amethyst Geodes Unearthed: Raw Beauty
SourcingDec 29, 2025
‘Unearthed: Raw Beauty’ Exhibition Opens at LA Museum

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

Stock image of gavel
CrimeDec 24, 2025
LA Jewelry District Couple Pleads Guilty to Hiding Millions from IRS

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

People shopping in winter clothes
SurveysDec 24, 2025
Consumer Confidence Falls Again in December

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

Hana Kaneko rings
Events & AwardsDec 24, 2025
NYC Jewelry, Antique, & Object Show Announces Winter Event

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

Brian Patrick Gilbertson
SourcingDec 23, 2025
Mining Titan Brian Gilbertson Dies at 82

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

Costume Designers Guild Award By Bulgari
Events & AwardsDec 23, 2025
Bulgari Reimagines Costume Designers Guild Award

The LVMH-owned brand has partnered with the costume design union to revamp its award for 2026.

Kering logo
MajorsDec 23, 2025
Kering to Acquire Stake in Raselli Franco Group

The luxury titan inked a deal to acquire an initial minority stake in the jewelry manufacturer with a pathway to full ownership by 2032.

For Future Reference Vintage
MajorsDec 23, 2025
For Future Reference Vintage Enters Bloomingdale’s

The company’s curation of unsigned vintage and estate jewelry debuted at the Bloomingdale’s in Costa Mesa, California.

Counterfeit Cartier and Audemars Piguet watches
CrimeDec 22, 2025
Customs Seizes Hundreds of Fake Rolex, Cartier Watches

In the recent multi-shipment seizure, CBP also found counterfeit Audemars Piguet, Moncler, and Chrome Hearts items.

Helzberg new store concept rendering
EditorsDec 22, 2025
How Helzberg Is Reimagining Its Stores

Helzberg’s Chief Retail Officer Mitch Maggart shared details about its tests of a new store concept rooted in an elevated luxury experience.

Graphic for the 2025 Year-End Webinar
Recorded WebinarsDec 22, 2025
2025 Jewelry Rewind: Looking Back on an Eventful Year

Jewelers of America execs and National Jeweler editors discuss tariffs, the sky-high gold price, and the engagement that broke the internet.

Pair of Ippolita Lollatini earrings
MajorsDec 19, 2025
MadaLuxe Group Acquires Ippolita

The luxury goods company said founder Ippolita Rostagno will remain at the brand’s helm.

Bulgari CEO Laura Burdese
MajorsDec 19, 2025
LVMH Names New Bulgari CEO

Laura Burdese, who joined the Italian luxury brand in 2022, will take on the role in July.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy