black market

But many mines have closed down in recent years and miners have been laid off, contributing to a black market that costs the South African government hundreds of millions of dollars each year.

"A black market has sprung up for infant milk, and it is one of the most commonly shoplifted items," he said.

Jewels from the original, which was set with 650 diamonds and weighed around 2,800 carats, were sold piecemeal on the black market.

To survive, the miners and undocumented migrants go beneath the surface to escape poverty and dig up gold to sell it on the black market.

This is why people in the industry believe stolen cheese is often sent overseas to countries where there are thriving food black markets – and indeed cheese black markets.