Interestingly, diamonds are a recent mass-market phenomenon, mainly post WW2. Diamonds for marriage were invented by De Beers in (possibly) one of the most succ

Interestingly, diamonds are a recent mass-market phenomenon, mainly post WW2. Diamonds for marriage were invented by De Beers in (possibly) one of the most successful marketing campaigns in history. http://www.theatlantic.com/magazine/archive/1982/02/have-you-ever-tried-to-sell-a-diamond/4575/ http://www.theatlantic.com/magazine/archive/1982/02/have-you...