AuctionsMar 11, 2026
‘Spectacular’ 26-Carat Diamond Going Up for Auction in London AuctionsMar 16, 2026
Bonhams Paris To Offer Antique, Signed Jewels
The live fine jewelry auction will take place later this week, showcasing antique pieces, rare gemstones, and signed jewels.
A diamond necklace (left) and a nearly 26-carat sapphire ring (right) are highlights of Bonhams Cornette de Saint Cyr’s fine jewelry auction slated for March 19.
Paris—Bonhams Cornette de Saint Cyr will offer more than 180 lots including notable antique jewels and signed pieces at its fine jewelry sale in Paris on Thursday.
The sale will showcase antique pieces and rare gemstones, as well as signed jewels from Cartier, Boucheron, Bulgari, Chaumet, Graff, Tiffany & Co., Van Cleef & Arpels, and Buccellati.
Leading the sale is a diamond necklace, pictured at the top of the article, made with articulating links set with old brilliant-cut diamonds. It is estimated to achieve €60,000 to €70,000 ($68,000 to $80,000).
Another highlight is a ring set with a 25.56-carat, oval-cut Sri Lankan sapphire surrounded by brilliant-cut diamonds. It is estimated to sell for €25,000 to €35,000 ($28,500 to $40,000).
“The forthcoming fine jewellery Paris sale offers a remarkable selection of jewels, many sourced from private collections,” said Marine Girardet, Bonhams head of jewellery, France.
“The lots highlight exceptional craftsmanship across eras, from antique and Art Deco masterpieces to contemporary designs, featuring an abundance of colorful gemstones, including a significant collection of emeralds and playful, vibrant creations.”
Another standout lot is a Bulgari colored gemstones sprung bracelet, circa 1980, that Girardet calls “a modern piece poised to captivate collectors worldwide.”
The sale will showcase antique pieces and rare gemstones, as well as signed jewels from Cartier, Boucheron, Bulgari, Chaumet, Graff, Tiffany & Co., Van Cleef & Arpels, and Buccellati.
Leading the sale is a diamond necklace, pictured at the top of the article, made with articulating links set with old brilliant-cut diamonds. It is estimated to achieve €60,000 to €70,000 ($68,000 to $80,000).
Another highlight is a ring set with a 25.56-carat, oval-cut Sri Lankan sapphire surrounded by brilliant-cut diamonds. It is estimated to sell for €25,000 to €35,000 ($28,500 to $40,000).
“The forthcoming fine jewellery Paris sale offers a remarkable selection of jewels, many sourced from private collections,” said Marine Girardet, Bonhams head of jewellery, France.
“The lots highlight exceptional craftsmanship across eras, from antique and Art Deco masterpieces to contemporary designs, featuring an abundance of colorful gemstones, including a significant collection of emeralds and playful, vibrant creations.”
Another standout lot is a Bulgari colored gemstones sprung bracelet, circa 1980, that Girardet calls “a modern piece poised to captivate collectors worldwide.”
A Bulgari colored gemstones sprung bracelet designed in a yellow gold fluted motif, set with pink and green tourmalines, amethysts, blue topaz, and citrine cabochons
A Boucheron diamond clip brooch featuring a scrolling design, set throughout with old brilliant-, circular-, and baguette-cut diamonds
A Chaumet bracelet made with an articulating series of drop-shaped plaques, each set with an oval-cut sapphire
Other signed jewels on offer include a Boucheron diamond clip brooch, circa 1930, that is estimated to fetch €10,000 to €15,000 ($11,400 to $17,000).
A Chaumet sapphire bracelet is also up for sale. It is estimated to sell for €5,000 to €7,000 ($5,700 to $8,000).
Among the antique offerings is a garnet and diamond necklace, circa 1880, that originated from a Greek princess, which has a pre-sale estimate of €20,000 to €25,000 ($23,000 to $28,500), and a diamond cuff bracelet dating from the end of the 19th century, estimated to sell for €10,000 to €12,000 ($11,400 to $13,700).
This garnet necklace is designed as a series of articulated floral links, culminating at the center with three ribbon motifs, suspending foliate garlands, set throughout with rose-cut diamonds and highlighted by circular and oval-shaped garnet cabochons.
This cuff features an old cushion-shaped diamond and two rose-cut diamonds set in a yellow gold supple Milanese bracelet with Greek-key motifs.
At left, a brooch designed as an openwork rosette with rose-cut diamonds and black enamel, mounted in yellow gold. At right, an enamel, ruby, and diamond snake bangle.
Also on offer is an enamel, ruby, and diamond snake bangle dating from the mid-19th century (est. €5,000 to €7,000, or $5,700 to $8,000) and an enamel and diamond brooch (est. €1,500 to €2,500, or $1,700 to $2,800).
Emerald jewelry is also a highlight of the auction.
A 19th-century emerald necklace with provenance from a Greek princess
A ring centering on a 16.82-carat Colombian emerald surrounded by diamonds is estimated to fetch €18,000 to €22,000 ($20,500 to $25,000).
A Bulgari ring set with a 3.41-carat, step-cut Colombian emerald surrounded by brilliant- and baguette-cut diamonds is on offer as well, with an estimate of €15,000 to €20,000 ($17,000 to $23,000).
There is also an emerald and diamond necklace dating from the end of the 19th century. Originating from a Greek princess, it features an openwork mount with foliate scrolling motifs set with diamonds and highlighted by step-cut emeralds, which suspending emeralds and old brilliant-cut diamond drops.
It is estimated to achieve €15,000 to €20,000 ($17,000 to $23,000).
To see more of the jewelry on offer, visit the Bonhams website.
The Latest
CollectionsApr 03, 2026
Taylor Swift’s ‘Elizabeth Taylor’ Video Puts Jewelry Front and CenterIconic pieces, like the Mike Todd Diamond Tiara, appear in the superstar’s new music video for her song inspired by the actress.
MajorsApr 03, 2026
Saks Global Says It Will Emerge From Bankruptcy This SummerThe luxury retailer, which went Chapter 11 in January, announced Thursday that it has secured $500 million in exit financing.
Events & AwardsApr 03, 2026
JCK Luxury, NouvelleBox Partner on New Designer BallroomThe NouvelleBox ballroom will feature independent jewelry designers, including Lene Vibe, Wyld Box Jewelry, and Kiaia Limited.
Brought to you by
Protect Your Customers and Your BusinessYou deserve to know what you are selling–to protect your customers as well as your business and your reputation.
CollectionsApr 03, 2026
Buddha Mama Brings Its ‘Moon’ Locket To DallasThe 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 QuizTest your jewelry news knowledge by answering these questions.
MajorsApr 02, 2026
Pandora Opens New Canadian Distribution Center Amid Tariff ConcernsThe new facility was also designed to better serve its growing customer base in Canada.
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.
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.
GradingApr 02, 2026
GIA Debuts New Campus in TaiwanIt is the only GIA school to offer the GIA Graduate Gemologist program in Chinese.
MajorsApr 02, 2026
DCA Launches ‘Second Spark’ Workforce InitiativeThe initiative connects veterans and parents returning to the workforce with careers in jewelry retail.
MajorsApr 02, 2026
Hoover & Strong Names New National Sales RepresentativeThe wholesale manufacturer and precious metals refiner has appointed Michael Angelo as its new national sales representative.
MajorsApr 01, 2026
Foundrae Sues Pandora for Allegedly Copying Its Medallion DesignsFoundrae also accused the jewelry giant of copying its mood board style of marketing.
SurveysApr 01, 2026
Consumers’ Outlook Improves Again in MarchThe Conference Board’s Consumer Confidence Index edged up, with optimism about the present outweighing worries about the future.
IndependentsApr 01, 2026
Zachary’s Jewelers’ Constance Polamalu to Release Children’s BookThe retailer’s Zach Bear gift comes to life in “Zach Bear and the Window Necklace,” which centers on curiosity, bravery, and helping.
Events & AwardsApr 01, 2026
AGA Opens 2026 Gemological Scholarship, Research Grant ApplicationsApplications are open for the AGA Gemological Scholarship Program through May 15, and until June 2027 for the Gemological Research Grant.
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.
CollectionsMar 31, 2026
Mejuri Adds Silver to ‘Puzzle’ CollectionMejuri’s popular collection of 18-karat yellow gold vermeil rings debuted in sterling silver alongside new “Puzzle” slider charms.
CollectionsMar 31, 2026
Buddha Mama, Ashley Longshore to Host Pop-Up in DallasThe Miami-based jewelry brand and the NYC-based artist will be in Dallas from April 9-11.
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.
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.
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.
TrendsMar 30, 2026
Oscar Heyman Debuts First Spring CatalogThe new catalog, which showcases 35 one-of-a-kind pieces of jewelry, is a compliment to the company’s popular holiday catalog.
SourcingMar 30, 2026
Rio Tinto Hauls Last Load from DiavikProduction has ceased at the Canadian diamond mine, which has yielded more than 150 million carats of rough diamonds in its 23-year run.
MajorsMar 30, 2026
Tanishq Opens First New England LocationThe store opening marks the 10th United States location for the India-based jewelry retailer.
MajorsMar 27, 2026
Saks Global Has Changed Its Mind About Closing These 3 StoresTwo Saks Fifth Avenue locations, one in Florida and one in California, and one Neiman Marcus store are off the chopping block.
IndependentsMar 27, 2026
Jimmy West, Longtime LJG Executive Director, Dies at 72West, who started in the art department at the Leading Jewelers Guild in 1979, is remembered for his patience, kindness, and dedication.
CollectionsMar 27, 2026
Itä’s ‘Yarí Whirl’ Ring Tells Every Side of the StoryIn the “Tesoro” version of the ring, our Piece of the Week, each side of the gold hexagonal nugget has a unique colored gemstone design.
