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.
Editors' Picks
Sponsored by
More on Auctions
The Latest
SurveysApr 24, 2026
Mother’s Day 2026 Jewelry Spending to Top $7B, NRF SaysNRF’s annual survey found that 45 percent of consumers plan to purchase jewelry for a loved one this Mother’s Day.
TechnologyApr 24, 2026
TwentyFour’s Digital-Age Locket Is a Virtual VaultThe “Vault” charm, our Piece of the Week, expands on the memories that can be stored in a locket by connecting to your phone.
Events & AwardsApr 24, 2026
Hamptons Jewelry Show to Return in JulyThe open-to-the-public luxury jewelry and timepiece show, in its second year, is slated for July 23-26.
Brought to you by
Discover Timeless Treasures: A Showcase of Antique Jewelry & Timepieces in Las VegasGain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.
IndependentsApr 23, 2026
Meet the Real Moms of Day’s JewelersThe jeweler’s Mother’s Day campaign highlights the women who work there—mothers, grandmothers, women who want to be mothers, and dog moms.
Weekly QuizApr 23, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
Supplier BulletinApr 23, 2026
JM® Shipping Solution: Smarter Shipping for High-Value GoodsSponsored by Jewelers Mutual
Lab-GrownApr 23, 2026
Charles & Colvard May Sell Assets for $1.5MThe proposed agreement follows the moissanite maker’s Chapter 11 bankruptcy protection filing last month.
Brought to you by
Las Vegas Antique Jewelry & Watch Show: Showcasing the Most Collectible Merchandise from Across the GlobeGain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.
CollectionsApr 23, 2026
Adam Neeley’s High Jewelry Collection Steps Into Salvador Dalí’s GardenThe “Dalí’s Garden” collection was inspired by a surreal dream Neeley had after cooking a recipe from Salvador Dalí’s 1973 cookbook.
IndependentsApr 23, 2026
Windsor Jewelers Names New Buying DirectorNatalie Feanny has been appointed to the role.
CrimeApr 22, 2026
New Mexico Couple Pleads Guilty to Selling Fake Native American JewelryThe pair falsely claimed their jewelry was made by Navajo artists, but it was imported from Vietnam.
CollectionsApr 22, 2026
British Museum Curator Pens Book on ‘The Tudor Heart’Rachel King’s book dives into the history of the pendant believed to have belonged to Henry VIII and his first wife, Katherine of Aragon.
Events & AwardsApr 22, 2026
Here’s What Sy Kessler Has on Tap for Las Vegas The company will have deals on precious metals testers as well as the latest in lab-grown diamond detection technology and security.
WatchesApr 21, 2026
Coco Chanel Enters the Game with New Watch CollectionGabrielle “Coco” Chanel is a character in the “Coco Game” collection of watches and the queen in its first haute horlogerie chessboard.
IndependentsApr 21, 2026
Meet Jewelers of America’s 2026 ‘20 Under 40’ ClassThe annual list honors rising professionals on the retail and supply sides of the jewelry industry.
CrimeApr 21, 2026
Customs Nabs 1,500 Pieces of Counterfeit Jewelry Bound for NYCSeized in Kentucky, the packages include fake Cartier, Tiffany & Co., Chanel, and Fendi jewelry.
CrimeApr 20, 2026
Queens Man Convicted in Bludgeoning Death of Pawn Shop OwnerRodolfo Lopez-Portillo faces 25 years to life in prison after being found guilty in the March 2022 beating death of Arasb Shoughi.
TrendsApr 20, 2026
Beth Bernstein, Sonia Esther Soltani Pen New Jewelry Book“Jewelry Creators: Dynamic Duos and Generational Gems” highlights the relationships among 22 influential designers, brands, and gem dealers.
Events & AwardsApr 20, 2026
Atlanta Jewelry Show’s Spring Event Is Hitting the RoadThe AJS Spring 2027 show will be held in Savannah, Georgia, with future shows taking place in other Southeast cities.
MajorsApr 20, 2026
Kendra Scott Names New CFO, Chief Business OfficerThe jewelry retailer plans to open 20 new stores this year and expand into new product categories.
TrendsApr 17, 2026
New (Groundbreaking) Floral Jewelry for Spring 2026Flower motifs are the jewelry trend blooming amongst the new collections that debuted this spring.
MajorsApr 17, 2026
QVC Group Files for Chapter 11 BankruptcyThe retailer reported an 8 percent decline in annual sales as it struggles under the weight of billions of dollars of debt.
CollectionsApr 17, 2026
Edina Kiss’ Earrings Are the Devil on Your ShoulderThe “Devil” drop earrings, our Piece of the Week, are part of designer Edina Kiss’ new namesake jewelry line that she will show at Couture.
CrimeApr 17, 2026
FBI Issues Warning to Refineries, Retailers Due to High Price of GoldThe alert states that burglary crews are targeting jewelry businesses and details how jewelers and refineries can protect themselves.
WatchesApr 16, 2026
Cartier Brings Back the RoadsterThe “watchmaker of shapes” debuted the reworked version of the vintage sports car-inspired timepiece at Watches & Wonders.
IndependentsApr 16, 2026
Edge Retail Academy Updates Leadership TeamAs demand for jewelry retail coaching grows, the company has established a dedicated business coaching leadership team.
MajorsApr 16, 2026
Stuller’s Latest Mountings Catalog Is Out NowThe “Mountings 2026-2027” catalog showcases Stuller’s largest and most diverse assortment to date with more than 400 new mounting styles.
