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

Screenshot of Taylor Swift's "Elizabeth Taylor" music video
CollectionsApr 03, 2026
Taylor Swift’s ‘Elizabeth Taylor’ Video Puts Jewelry Front and Center

Iconic pieces, like the Mike Todd Diamond Tiara, appear in the superstar’s new music video for her song inspired by the actress.

Neiman Marcus store in Fort Worth, Texas
MajorsApr 03, 2026
Saks Global Says It Will Emerge From Bankruptcy This Summer

The luxury retailer, which went Chapter 11 in January, announced Thursday that it has secured $500 million in exit financing.

NouvelleBox logo
Events & AwardsApr 03, 2026
JCK Luxury, NouvelleBox Partner on New Designer Ballroom

The NouvelleBox ballroom will feature independent jewelry designers, including Lene Vibe, Wyld Box Jewelry, and Kiaia Limited.

GIA iD100®
Brought to you by
Protect Your Customers and Your Business

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Buddha Mama Moon Locket
CollectionsApr 03, 2026
Buddha Mama Brings Its ‘Moon’ Locket To Dallas

The one-of-a-kind locket, our Piece of the Week, opens to reveal three hidden images to keep close to your heart.

Weekly QuizApr 02, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Pandora distribution facility Canada
MajorsApr 02, 2026
Pandora Opens New Canadian Distribution Center Amid Tariff Concerns

The new facility was also designed to better serve its growing customer base in Canada.

Michelle Yeoh Mikimoto
TrendsApr 02, 2026
Michelle Yeoh Fronts New Mikimoto Campaign

The campaign is a tribute to the year 1893, when Kokichi Mikimoto created the world’s first cultured pearl.

TopImageCrop.jpg
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

GIA President and CEO Pritesh Patel at GIA Taiwan campus
GradingApr 02, 2026
GIA Debuts New Campus in Taiwan

It is the only GIA school to offer the GIA Graduate Gemologist program in Chinese.

DCA Second Spark Workforce Initiative Graphic
MajorsApr 02, 2026
DCA Launches ‘Second Spark’ Workforce Initiative

The initiative connects veterans and parents returning to the workforce with careers in jewelry retail.

Michael Angelo
MajorsApr 02, 2026
Hoover & Strong Names New National Sales Representative

The wholesale manufacturer and precious metals refiner has appointed Michael Angelo as its new national sales representative.

Pandora and Foundrae medallion jewelry
MajorsApr 01, 2026
Foundrae Sues Pandora for Allegedly Copying Its Medallion Designs

Foundrae also accused the jewelry giant of copying its mood board style of marketing.

Stock image of a Shell gas station
SurveysApr 01, 2026
Consumers’ Outlook Improves Again in March

The Conference Board’s Consumer Confidence Index edged up, with optimism about the present outweighing worries about the future.

Zach Bear and the Window Necklace Children’s Book from Zachary’s Jewelers
IndependentsApr 01, 2026
Zachary’s Jewelers’ Constance Polamalu to Release Children’s Book

The retailer’s Zach Bear gift comes to life in “Zach Bear and the Window Necklace,” which centers on curiosity, bravery, and helping.

Accredited Gemologists Association Logo
Events & AwardsApr 01, 2026
AGA Opens 2026 Gemological Scholarship, Research Grant Applications

Applications are open for the AGA Gemological Scholarship Program through May 15, and until June 2027 for the Gemological Research Grant.

National Jeweler columnist and Smart Age founder and CEO Emmanuel Raheb
ColumnistsMar 31, 2026
Q1 Clues That Reveal Where Your Jewelry Store’s Sales Are Heading

These customer behavior patterns say a lot about how successful your jewelry store is going to be this year, Emmanuel Raheb writes.

Mejuri Puzzle Collection Campaign Imagery
CollectionsMar 31, 2026
Mejuri Adds Silver to ‘Puzzle’ Collection

Mejuri’s popular collection of 18-karat yellow gold vermeil rings debuted in sterling silver alongside new “Puzzle” slider charms.

Ashley Longshore in Buddha Mama jewelry
CollectionsMar 31, 2026
Buddha Mama, Ashley Longshore to Host Pop-Up in Dallas

The Miami-based jewelry brand and the NYC-based artist will be in Dallas from April 9-11.

Natural Diamond Council world diamond day
SourcingMar 31, 2026
NDC Designates April 8 as 'World Diamond Day'

The initiative invites those in the industry to share stories on social media highlighting the meaning and impact of natural diamonds.

Jillian Wolk, the new CEO of Tracr
SourcingMar 31, 2026
GIA VP Jillian Wolk to Take Over at Tracr

Wolk’s first day on the job as CEO of Tracr, De Beers Group’s blockchain platform, will be May 1.

Tom Moses examining the “Motswedi” diamond
EditorsMar 30, 2026
Tom Moses Looks Back on His Decades at GIA

Moses, who will leave the lab in May after nearly 50 years, discusses his start in the business, gemstones that stand out, and what’s next.

Oscar Heyman Spring Catalog Aquamarine and Diamond Necklace and Platinum Opal, Sapphire, Emerald, Diamond Bracelet
TrendsMar 30, 2026
Oscar Heyman Debuts First Spring Catalog

The new catalog, which showcases 35 one-of-a-kind pieces of jewelry, is a compliment to the company’s popular holiday catalog.

Diavik Diamond Mine winter aerial shot
SourcingMar 30, 2026
Rio Tinto Hauls Last Load from Diavik

Production has ceased at the Canadian diamond mine, which has yielded more than 150 million carats of rough diamonds in its 23-year run.

Tanishq Westborough Massachusetts store
MajorsMar 30, 2026
Tanishq Opens First New England Location

The store opening marks the 10th United States location for the India-based jewelry retailer.

Saks Fifth Avenue door sign
MajorsMar 27, 2026
Saks Global Has Changed Its Mind About Closing These 3 Stores

Two Saks Fifth Avenue locations, one in Florida and one in California, and one Neiman Marcus store are off the chopping block.

Jimmy West celebrating 40 years with Leading Jewelers Guild
IndependentsMar 27, 2026
Jimmy West, Longtime LJG Executive Director, Dies at 72

West, who started in the art department at the Leading Jewelers Guild in 1979, is remembered for his patience, kindness, and dedication.

Itä Yari Whirl Ring Tesoro
CollectionsMar 27, 2026
Itä’s ‘Yarí Whirl’ Ring Tells Every Side of the Story

In the “Tesoro” version of the ring, our Piece of the Week, each side of the gold hexagonal nugget has a unique colored gemstone design.

×

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