• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Diamonds

The World’s Biggest Diamond Miner Said It Would Never Sell Stones Made in a Lab—Until Now. Here’s What Changed

By
Bloomberg
Bloomberg
Down Arrow Button Icon
By
Bloomberg
Bloomberg
Down Arrow Button Icon
May 29, 2018, 4:40 AM ET

De Beers is moving to sell diamonds made in a lab rather than formed underground over billions of years.

The world’s biggest diamond miner for years vowed that it wouldn’t sell stones made in laboratories. Now, it has U-turned on that pledge and will start selling man-made stones for about $800 a carat, according to a memo sent to its customers and obtained by Bloomberg News.

While De Beers has never sold man-made diamonds before, it’s very good at making them. The company’s Element Six unit is one of the world’s leading companies for synthetic diamonds, which are mostly used for industrial purposes. It has also been producing gem-quality stones for years to help it tell the difference between natural and man-made types and to reassure consumers that they’re buying the real thing.

While man-made gems make up just a fraction of the $80 billion global diamond market, demand is increasing as buyers look for stones that are cheaper. Retailers like Walmart Inc. have sold synthetic diamonds to customers seeking cheaper alternatives.

De Beers, a unit of Anglo American Plc (AAUKY), will sell the lab-produced gems under a new Lightbox Jewelry brand to be started in the U.S. later this year, according to the memo.

About the Author
By Bloomberg
See full bioRight Arrow Button Icon

Latest in Luxury

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
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
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

© 2026 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.


Most Popular

placeholder alt text
Economy
Elon Musk warns the U.S. is '1,000% going to go bankrupt' unless AI and robotics save the economy from crushing debt
By Jason MaFebruary 7, 2026
1 day ago
placeholder alt text
Success
Gen Z Patriots quarterback Drake Maye still drives a 2015 pickup truck even after it broke down on the highway—despite his $37 million contract
By Sasha RogelbergFebruary 7, 2026
2 days ago
placeholder alt text
Success
Even with $850 billion to his name, Elon Musk admits ‘money can’t buy happiness.’ But billionaire Mark Cuban says it’s not so simple
By Preston ForeFebruary 6, 2026
2 days ago
placeholder alt text
Future of Work
Anthropic cofounder says studying the humanities will be 'more important than ever' and reveals what the AI company looks for when hiring
By Jason MaFebruary 7, 2026
1 day ago
placeholder alt text
AI
AI can make anyone rich: Mark Cuban says it could turn 'just one dude in a basement' into a trillionaire
By Sydney LakeFebruary 7, 2026
1 day ago
placeholder alt text
Real Estate
We may be looking at the housing affordability crisis all wrong. Higher earners are driving home prices, not lack of supply, researchers say
By Jason MaFebruary 7, 2026
1 day ago
0