• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
RetailDiamonds
Europe

De Beers ditches lab-grown diamonds and shifts focus to natural stones, as it looks beyond mining giant Anglo

By
Thomas Biesheuvel
Thomas Biesheuvel
and
Bloomberg
Bloomberg
Down Arrow Button Icon
By
Thomas Biesheuvel
Thomas Biesheuvel
and
Bloomberg
Bloomberg
Down Arrow Button Icon
June 4, 2024, 6:22 AM ET
Al Cook, chief executive officer of De Beers Plc
“We know how to do it and we’re coming back,” CEO AI Cook said. “All of this comes together under a big theme of differentiating natural diamonds from lab grown.”Dwayne Senior—Bloomberg/Getty Images

De Beers will ditch a controversial experiment to sell lab grown diamond jewelry, ending a six-year program that broke one of its oldest taboos. 

While the company long held the technology to make synthetic gems, it always refused to sell them as jewelry, fearing they would undercut the allure of natural stones. Yet as man-made stones gained traction and started competing directly with natural diamonds, De Beers launched its own jewelry brand in 2018.

The company introduced Lightbox to sell synthetic diamonds at a steep discount to rival producers in an attempt to drag prices lower and create a clear divide in consumers’ minds. Now it’s pulling that offering, as De Beers Chief Executive Officer Al Cook overhauls a business that’s set to be cast adrift by owner Anglo American Plc. 

As part of a turnaround plan to fend off an approach from BHP Group, Anglo last month said it planned to sell or separate De Beers, ending an almost century-long relationship with the industry’s most famous name. As De Beers — which coined the slogan “Diamonds are Forever” — prepares for that split, it will renew its focus on promoting natural stones.

“We know how to do it and we’re coming back,” CEO Cook said in an interview. “All of this comes together under a big theme of differentiating natural diamonds from lab grown.”

Synthetic diamond prices have now collapsed, though how much of that is down to De Beers and how much is because of a flood of new supply is open to debate. That undermines the logic for the De Beers venture, with wholesale prices of lab grown diamonds now lower than those of Lightbox, which were well below the going rate when first introduced. 

Still, while synthetic diamond prices have collapsed, they’ve caused significant collateral damage. Natural stones used in cheaper 1 to 2 carat wedding rings have tumbled under pressure from synthetics and have so far shown little sign of a sustained recovery.

De Beers will not immediately stop selling its Lightbox stones. It will use up its existing inventory — which will take about a year — and then make a decision on what to do with the business. 

Industry participants are still divided on what the long-term impact of synthetics will be and how much of the current diamond industry weakness is cyclical, rather than a structural change, partly brought about by lab-grown alternatives. 

Unlike imitation gems such as cubic zirconia, diamonds grown in labs have the same physical characteristics and chemical makeup as mined stones. They’re made from a carbon seed placed in a microwave chamber and superheated into a glowing plasma ball. The process creates particles that can eventually crystallize into diamonds. The technology is so advanced that experts need a machine to distinguish between synthesized and mined gems.

De Beers will turn its focus on so-called category marketing, where it promotes diamond jewelry in general rather than just its own branded gems. It will also expand its retail footprint through its own jewelry stores.

The company will also dip its toe into polishing its own stones, part of the industry dominated by mostly family run firms in India and Belgium.

De Beers is targeting annual core profit of $1.5 billion by 2028. Last year, the business made just $72 million, though traditionally its profits have ranged between $500 million and $1.5 billion as the diamond industry swings from boom to bust.

That volatility created frustration within Anglo, where years of erratic performance eroded returns from more coveted commodities, such as copper.

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Authors
By Thomas Biesheuvel
See full bioRight Arrow Button Icon
By Bloomberg
See full bioRight Arrow Button Icon

Latest in Retail

millennial
CommentaryConsumer Spending
Meet the 2025 holiday white whale: the millennial dad spending $500+ per kid
By Phillip GoerickeDecember 12, 2025
2 days ago
McDonald
RetailRetail
Lululemon CEO Calvin McDonald to step down as quarterly profit dips 13%
By Anne D'Innocenzio and The Associated PressDecember 12, 2025
2 days ago
Sarandos
CommentaryAntitrust
Netflix, Warner, Paramount and antitrust: Entertainment megadeal’s outcome must follow the evidence, not politics or fear of integration
By Satya MararDecember 12, 2025
2 days ago
InvestingMarkets
Retail investors drive stocks to a pre-Christmas all-time high—and Wall Street sees a moment to sell
By Jim EdwardsDecember 12, 2025
2 days ago
Five panelists seated; two women and five men.
AIBrainstorm AI
The race to deploy an AI workforce faces one important trust gap: What happens when an agent goes rogue?
By Amanda GerutDecember 11, 2025
3 days ago
Oreo
RetailFood and drink
Zero-sugar Oreos headed to America for first time
By Dee-Ann Durbin and The Associated PressDecember 11, 2025
3 days ago

Most Popular

placeholder alt text
Economy
Tariffs are taxes and they were used to finance the federal government until the 1913 income tax. A top economist breaks it down
By Kent JonesDecember 12, 2025
2 days ago
placeholder alt text
Success
Apple cofounder Ronald Wayne sold his 10% stake for $800 in 1976—today it’d be worth up to $400 billion
By Preston ForeDecember 12, 2025
2 days ago
placeholder alt text
Success
40% of Stanford undergrads receive disability accommodations—but it’s become a college-wide phenomenon as Gen Z try to succeed in the current climate
By Preston ForeDecember 12, 2025
2 days ago
placeholder alt text
Uncategorized
Transforming customer support through intelligent AI operations
By Lauren ChomiukNovember 26, 2025
18 days ago
placeholder alt text
Economy
The Fed just ‘Trump-proofed’ itself with a unanimous move to preempt a potential leadership shake-up
By Jason MaDecember 12, 2025
2 days ago
placeholder alt text
Success
Apple CEO Tim Cook out-earns the average American’s salary in just 7 hours—to put that into context, he could buy a new $439,000 home in just 2 days
By Emma BurleighDecember 12, 2025
2 days ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.