De Beers
Appears in 4 conspiracy theories
Diamonds Are Forever — Artificial Scarcity by De Beers
De Beers ran a confirmed monopoly on diamond supply for over a century while using the 1947 'A Diamond Is Forever' campaign to manufacture the tradition of diamond engagement rings and suppress resale markets.
Blood Diamond Industry Cover-Up
The diamond industry's decades-long knowledge and concealment of conflict diamond financing — diamonds funding civil wars in Sierra Leone, Angola, and the Congo — confirmed by UN panels
De Beers Synthetic Diamond Suppression
De Beers acquired synthetic diamond technology from GE in 1955 and kept lab-grown gems off the market for decades while controlling pricing. Confirmed through antitrust investigations.
Diamond Resale Value Myth / Engineered Illiquidity
De Beers deliberately built a retail market with no buy-back mechanism, trapping consumers in an illiquid asset that loses 50% of its value upon purchase — a designed feature, not a bug.