Manufactured scarcity is a business model where a company controls supply tightly enough to set the price itself, not the market. For 138 years, De Beers ran the textbook version of it. This week, Anglo American confirmed talks to sell its 85% stake in De Beers for roughly $1 billion — the same stake once valued near $17.6 billion in 2001.
De Beers didn’t just mine diamonds well. Starting in the late 1800s, it bought up competing mines and routed nearly all the world’s rough diamonds through a single London selling desk. Holding 80–90% of supply by the 1980s, it could stockpile inventory whenever prices softened, so the market never saw a real glut — paired with decades of advertising that made “diamonds are forever” feel like a law of nature rather than a slogan. Manufactured scarcity only works as long as both halves hold: control the supply, and control the story about why that supply is precious.
Both halves cracked. Independent mines outside De Beers’ channel pulled its market share down from 80–90% toward 30% by the 2000s. Then came the harder problem: lab-grown diamonds, chemically identical to mined ones, arrived with no scarcity story to defend — U.S. engagement rings using lab-grown stones climbed from roughly 6% in 2019 to over half by 2026, and wholesale mined-diamond prices fell around 90% from 2018 levels. That’s a different kind of scarcity than the artificial scarcity that spikes IPO prices — this one was built over a century, not a thin float on debut day.
De Beers tried to hold both lines — launching its own lab-grown brand, Lightbox, in 2018 at a flat per-carat price specifically to keep synthetic stones looking cheap and separate from “real” diamonds. It drew the line but didn’t make money doing it, and dropped the brand in 2025. The lesson outlives diamonds: manufactured scarcity is a pricing strategy, not a law of physics, and it survives only until someone builds a substitute nobody can tell apart from the original.
My take: Scarcity was never the diamond. It was the marketing.
Not advice. Just how I see it.