The marketing strategy that made De Beers a monopoly.
How an Ad Campaign Invented the Diamond Engagement Ring - The Atlantic
Solved Diamonds are forever. These three simple words are
De Beers' History Engagement Ring Origins - BAUNAT
The marketing strategy that made De Beers a monopoly.
Does De Beers have a monopoly on the diamond industry? How is this
DeBeers to Undergo Major Changes
De Beers fighting to restore monopoly; challenges lie ahead - The
Diamonds Are Not Rare, They Are Just Expensive
De Beers the rise and fall of a unique monopoly – London DE
De Beers buffs its image, but not all see the sparkle - Aug. 25, 2000