The story of diamonds in the 20th century is a case study in how an industry can engineer culture - and how thoroughly it can succeed.
De Beers controlled the supply. N.W. Ayer created the demand. Together, they built something that didn't exist in the same form before 1939: a global cultural norm that a diamond engagement ring was not just desirable, but required.
The advertising strategy was methodical. They worked with Hollywood studios to ensure diamonds appeared prominently in films - worn by leading women, given by men at key emotional moments. They sent free jewellery to celebrities and arranged for it to be photographed. They placed articles in fashion and lifestyle magazines that tied diamonds to romance without appearing to be advertising. They targeted young women with messages about what love looked like. They targeted young men with messages about what commitment required.
It wasn't subliminal. It was just thorough.
The result was a complete cultural shift. Across the US, then Europe, then Japan and beyond, the diamond engagement ring became the expected form of a serious proposal. Not legally required. Not traditionally rooted (in most cultures). Just expected - and expectations are often stronger than laws.
What's remarkable is that the strategy was documented. A 1982 Atlantic article titled "Have You Ever Tried to Sell a Diamond?" laid out the mechanics in detail. People read it. Understood it. And continued to buy diamonds.
Because by then, the meaning was real. The engineering succeeded too well to be undone by knowing about it. The tradition had been created, and traditions, once created, have a momentum of their own. Read how this campaign started from a single late-night copywriting session.
