There are really more diamonds than there is demand - so why are they so pricey?

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"Romance Killer"
"The diamond trade thrives on secrecy, tenfold markups and the mystique of the world's most precious gem. Mark Vadon sees a commodity waiting to happen. What that means for everyone else: Profits aren't forever."

"Conflict Diamonds"
"On 5th December 2011 Global Witness announced its departure from the Kimberley Process, the international certification scheme established to stop the trade in blood diamonds."

Conflict Diamonds: Did Someone Die for That Diamond?
"Some diamonds have helped fund devastating civil wars in Africa, destroying the lives of millions."

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