Many of the habits people consider timeless traditions are surprisingly recent inventions. What feels natural often has roots in carefully crafted campaigns designed to influence behavior at scale. Over the past century, advertisers, industry groups, and public relations pioneers have reshaped cultural norms in quiet but powerful ways. Looking back at these moments reveals how easily ideas can move from marketing strategy to unquestioned reality.
#1: Diamonds as the Only Acceptable Engagement Stone
The idea that a diamond is essential for engagement rings was not a long-standing tradition but the result of a De Beers advertising campaign in the mid-20th century. Their messaging linked diamonds with eternal love and emotional permanence, famously reinforced by the slogan “A diamond is forever.” Before this push, engagement rings varied widely in materials and meaning. The campaign successfully narrowed expectations until alternatives seemed almost inappropriate.
