The short history of the diamond engagement ring
De Beers Group: New Research Highlights Key Trends Shaping How Younger Generations Perceive, Research and Buy Diamonds
De Beers announces a new global campaign celebrating commitment and purpose
DB Classic heart-shaped diamond ring
The marketing strategy that made De Beers a monopoly.
Marketing Musings: Diamonds may not be forever
The Ad-Woman Who Made Diamonds 'Forever
The Engagement Ring Story: How De Beers Created a Multi-Billion Dollar Industry From the Ground Up
PRinHistory: We “Put A (Diamond) Ring on It” Because of PR - JOTO PR
Case of de Beers, PDF, Diamond
Diamonds Aren't Forever — SnoQap
De Beers warns diamonds aren't forever
De Beers Group Doubles Down On Natural Diamonds With the Return of the Iconic 'A Diamond is Forever' Category Campaign - European Business Magazine
De Beers fighting to restore monopoly; challenges lie ahead - The Economic Times
A Diamond is Forever' – just don't bank on one.