Diamonds Are Forever,' and Made by Machine - The New York Times
Diamond Facts Report - Only Natural Diamonds
PRinHistory: We “Put A (Diamond) Ring on It” Because of PR - JOTO PR
Ada Diamonds Founders at GIA
De Beers-Botswana deal signals rocky road for rough diamonds
Blood Diamonds
The Engagement Ring Story - In fact, it's worth at least 50% less than you paid for it the moment - Studocu
The Engagement Ring Story: How De Beers Created a Multi-Billion Dollar Industry From the Ground Up - Strategies For Success
The marketing strategy that made De Beers a monopoly.