Negative Externality (Blood Diamonds)
A product can look affordable because its price excludes harms imposed on people outside the transaction. With blood diamonds, money saved or earned in the market can become funding for armed violence elsewhere.
A diamond bought as a symbol of commitment can help pay for someone else’s killing. When militants seize mines and finance their activities through diamond sales, the jewellery purchase becomes a subsidy hidden inside a celebration.
E1When the checkout price omits the bloodshed
The transaction has three separated parties: the buyer receives the stone, the seller receives the payment, and distant strangers bear the violence. Because that harm never appears on the receipt—and may be concealed by a long supply chain—the buyer can treat the market price as the total cost. It is not. The missing burden is a negative externality: revenue flows toward an armed group while the consequences fall on people who had no part in the purchase.
E1Where it shows up
A mine becomes a funding stream
Seizing a diamond mine gives a militant group an asset it can sell. Demand at the far end of the chain converts the stone into money for the group’s activities, connecting an ordinary retail purchase to violence that remains out of the buyer’s sight.
E1The label cannot replace provenance
The mechanism applies when diamond revenue actually reaches armed groups; it does not make every diamond purchase equivalent to financing militants. The crucial question is where the particular stone came from and who captured the money along its route to market.
E1Ask for the chain, not the reassurance
Before buying a diamond, require the seller to explain and document its provenance. If the path from mine to counter cannot be established, treat that uncertainty as part of the price rather than assuming the receipt contains the whole cost.
Episodes that teach this
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Diamonds Are a Scam, Not Rare & Not a Good Investment - Stay Safe
· explained at 8:31
15,800 views
Militant groups seized African mines and 'use sales of those diamonds to fund their activities' — buying a blood diamond is 'directly subsidizing some militant group killing other people.'