GradingJun 11, 2025
Tiffany Stevens Exits IGI, Lab Appoints New Board LeaderAuctionsJun 12, 2025
Former De Beers Exec Celine Assimon Joins Bonhams
Assimon is the auction house’s new chief commercial officer.
Celine Assimon has been named Bonhams’ new chief commercial officer.
London– Bonhams has appointed Celine Assimon as its chief commercial officer.
Assimon brings more than two decades of experience leading commercial strategy, client engagement, and brand development across global markets.
Prior to joining Bonhams, Assimon was CEO of De Beers London, where she led a major brand transformation, expanded its international retail presence, and implemented customer-centric strategies, the auction house said.
Previously, she has served as CEO of De Beers Forevermark, CEO of De Grisogono, and held senior leadership roles at Richemont and Louis Vuitton, including international director of high jewelry and exceptional pieces at Piaget.
Assimon is also a certified diamond graduate from the Gemological Institute of America.
In her new role, Assimon will be based in London and oversee global commercial strategy and drive client experience across all areas of the business.
Bonhams said she will be instrumental in aligning the company’s commercial vision with its expanding global platform, ensuring consistent growth and innovation across the auction house’s diverse portfolio of categories.
"We are delighted to welcome Celine Assimon to Bonhams. She brings a powerful blend of commercial expertise, leadership, and a deep understanding of the luxury market,” said Bonhams Global CEO Chabi Nouri.
“Her appointment reinforces our commitment to strengthening client relationships and enhancing Bonhams’ global commercial capabilities."
Assimon said she is thrilled to join the auction house at such a dynamic point in its evolution.
"With its exceptional heritage and forward-looking vision, Bonhams is uniquely positioned in the auction world. I look forward to contributing to its continued global growth and success," she said.
Related stories will be right here …
Assimon brings more than two decades of experience leading commercial strategy, client engagement, and brand development across global markets.
Prior to joining Bonhams, Assimon was CEO of De Beers London, where she led a major brand transformation, expanded its international retail presence, and implemented customer-centric strategies, the auction house said.
Previously, she has served as CEO of De Beers Forevermark, CEO of De Grisogono, and held senior leadership roles at Richemont and Louis Vuitton, including international director of high jewelry and exceptional pieces at Piaget.
Assimon is also a certified diamond graduate from the Gemological Institute of America.
In her new role, Assimon will be based in London and oversee global commercial strategy and drive client experience across all areas of the business.
Bonhams said she will be instrumental in aligning the company’s commercial vision with its expanding global platform, ensuring consistent growth and innovation across the auction house’s diverse portfolio of categories.
"We are delighted to welcome Celine Assimon to Bonhams. She brings a powerful blend of commercial expertise, leadership, and a deep understanding of the luxury market,” said Bonhams Global CEO Chabi Nouri.
“Her appointment reinforces our commitment to strengthening client relationships and enhancing Bonhams’ global commercial capabilities."
Assimon said she is thrilled to join the auction house at such a dynamic point in its evolution.
"With its exceptional heritage and forward-looking vision, Bonhams is uniquely positioned in the auction world. I look forward to contributing to its continued global growth and success," she said.
More on Auctions
The Latest
SourcingSep 09, 2025
Anglo American to Merge With Canadian Copper Miner Anglo plans to merge with Teck Resources Ltd. to form Anglo Teck. The deal changes nothing about its plans to offload De Beers.
MajorsSep 09, 2025
MJSA Education Foundation Announces 2025 Scholarship WinnersThe nonprofit awarded four students pursuing a professional career in jewelry making and design with $2,250 each.
IndependentsSep 08, 2025
Take a Look Inside the New Korman Store in AustinThe Texas-based jeweler has also undergone a brand refresh, debuting a new website and logo.
Brought to you by
reDollar.com Is Rolling Out the Next Level Jewelry, Diamond & Watch Consignment ProgramWith their unmatched services and low fees, reDollar.com is challenging some big names in the online consignment world.
MajorsSep 08, 2025
MJSA Is Officially Now Under JA’s UmbrellaThe two organizations have finalized and signed the affiliation agreement announced in May.
Weekly QuizSep 04, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
AuctionsSep 08, 2025
Sotheby’s To Auction ‘Exceptional’ Collection of JAR, Suzanne Belperron JewelsThe single-owner sale will headline Sotheby's inaugural jewelry auction at the Breuer building, its new global headquarters, this December.
Events & AwardsSep 08, 2025
27 Can’t-Miss Converge Sessions, Events From sunrise yoga to tariffs talks, these are some events to check out at the upcoming inaugural event.
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key IssuesJewelers of America is leading the charge to protect the industry amidst rising economic threats.
ColumnistsSep 05, 2025
Peter Smith: A Lasting Lesson From Maurice Tempelsman Smith recalls a bit of wisdom the industry leader, who died last week, shared at a diamond conference years ago.
CollectionsSep 05, 2025
Piece of the Week: Jamie Turner’s ‘Victoria’ Necklace The “Victoria” necklace features a labradorite hugged by diamond accents in 18-karat yellow gold.
Policies & IssuesSep 05, 2025
Trump Takes Tariffs Case to the Supreme Court Two lower courts have moved to block the import taxes, which will remain in place as the legal battle continues.
WatchesSep 05, 2025
Patrick Mahomes Is the New Hublot Brand AmbassadorThe Kansas City Chiefs quarterback shares Hublot’s dedication to pursuing greatness, the Swiss watchmaker said.
SourcingSep 04, 2025
Lucara Unveils Unusual 37-Carat Pink DiamondThe Type IIa stone, recovered from Botswana’s Karowe diamond mine last month, features unique coloration.
WatchesSep 04, 2025
Breitling Takes Its NFL Game to the Next Level Breitling is now the NFL’s official timepiece partner, a move that puts the brand in front of the millions of Americans who watch football.
Events & AwardsSep 04, 2025
The NYC Jewelry, Antique, & Object Show Returns in NovemberNYCJAOS is set for Nov. 21-23 in New York City’s Chelsea neighborhood.
SourcingSep 03, 2025
Gemfields Confirms Completion of Fabergé SaleU.S.-based investment company SMG Capital LLC is the new owner of the luxury brand.
MajorsSep 03, 2025
These Are the Nearly 300 Claire’s Stores Set to CloseA new court filing details the locations of the stores that will close, as well as the 830 that will remain open.
MajorsSep 03, 2025
Stuller Releases 2 New Catalogs The new catalogs are “Tools, Equipment, & Metals” and “Findings & Metals.”
TrendsSep 03, 2025
Amanda’s Style File: A Perfect BirthstoneSapphire’s variety of colors make it the perfect birthstone for September.
FinancialsSep 02, 2025
Lab-Grown Diamonds, Lower-Priced Fashion Jewelry Drive Signet Jewelers’ Q2 SalesThe retailer has raised its guidance after seeing total sales increase 3 percent in the second quarter, beating expectations.
MajorsSep 02, 2025
Birks CEO Jean-Christophe Bédos Steps DownNiccolò Rossi di Montelera, executive chairman of the board, was appointed as interim CEO.
MajorsSep 02, 2025
Harry Winston Opens Its Largest Flagship in JapanThe three-floor space also features the jeweler’s largest VIP salon in Japan and offers an exclusive diamond pendant.
CollectionsSep 02, 2025
Stephanie Gottlieb Debuts Silver Designs in ‘All Hours’ CollabThe collection is a collaboration between Stephanie Gottlieb Fine Jewelry and Oak and Luna, focusing on understated essentials.
AuctionsAug 29, 2025
Sotheby’s UAE Sale to Feature 32-Carat Fancy Vivid Orangy Pink DiamondThe highlight of a single-owner jewelry and watch collection, it’s estimated to fetch up to $7 million at auction this December.
FinancialsAug 29, 2025
Movado’s Q2 Sales Rebound Despite Tariff ImpactCEO Efraim Grinberg noted a resurgence in the fashion watch market.
CollectionsAug 29, 2025
Piece of the Week: Mark Davis’ ‘Bullseye’ Necklace The “Bullseye” necklace, with vintage bakelite and peridot, August’s birthstone, is the perfect transitional piece as summer turns to fall.
