https://t.inks.page/wiki/Diamond Follow any website on Inks inks.page https://en.wikiquote.org/wiki/Diamond?t=2026-04-11 We are dealing with a problem in mass psychology. We seek to ... strengthen the tradition of the diamond engagement ring—to make it a psychological necessity capable of competing successfully at the retail level with utility goods and services.

• N. W. Ayer (1947) strategy plan for De Beers, as cited in "Have You Ever Tried to Sell a Diamond?", The Atlantic Monthly (February 1982).

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