Former De Beers Exec Celine Assimon Joins Bonhams
Assimon is the auction house’s new 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.
The Latest

Anne Hathaway was seen wearing the toggle necklace three times while filming scenes for “The Devil Wears Prada 2.”

Jewellery & Gem World Hong Kong is scheduled for Sept. 15 to 21, and buyer pre-registration will be available until Sept. 7.

Renovations at Tiffany & Co. stores ate into profits in the company’s watch and jewelry division.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Mark and Candy Udell of London Jewelers will receive the honor at the 24th annual Gem Awards next March.


While struggles continue at the mining and trading end of the pipeline, consumer demand for diamond jewelry is holding steady.

The “Fantasia” jewelry collection turns the intaglio animals from her “Close Encounters” collection into 3D characters.

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

The special Classic Avi Chronograph 42 with an Eagles-green dial is limited to 59 pieces, a nod to the Super Bowl Philadelphia just won.

JSA has received reports of mobs swarming jewelry stores, driving cars into the storefront or smashing through the windows.

The “Kashmir” collection features centuries-old craft techniques made in collaboration with the region’s master papier-mâché artisans.

Creative Director Erica Bianchini shared why the jeweler is looking to expand into the U.S. and how it’s putting Canadian craftsmanship on the map.

Two Los Angeles Fire Department stations plan to use the donations to upgrade their equipment and tools.

Next week, the auction house will kick off a selling exhibition of jewelry by British artist Hannah Martin and Coldplay’s Guy Berryman.

“Stolen: Heist of the Century” is based on “Flawless,” the book about the middle-of-the-night theft, and will debut on Netflix in August.

Emmanuel Raheb shares the top five gifting moments outside of major holidays that jewelers should build marketing campaigns around.

The wholesale trade show’s Luxury Lifestyle section will showcase established and emerging jewelry designers.

As demand for custom jewelry grows, the company is expanding its services to support retailers.

The mid-year conference for jewelry and watch appraisers is slated for Aug. 9 to 10 on Zoom.

Graduated stones make for elevated tennis-style pieces and dramatic statement necklaces.

Nominations in the categories of Jewelry Design, Media Excellence, and Retail Innovation will be accepted through July 30.

He retired last month after 28 years traveling the world to source the very best gemstones for his family’s jewelry business, Oscar Heyman.

The charm necklace features six nautical charms of shells and coral that founder Christina Puchi collected on Florida’s beaches.

The organization elected its youngest vice president as it looks to draw in fresh talent.

Campbell joins the company as vice president of business development while Liebler is the new vice president of operations.

The medals feature a split-texture design highlighting the Games’ first time being hosted by two cities and the athletes’ journeys.

Sponsored by The INSTORE Jewelry Show 2025