"The scam works like this: He brings a 5g sample of gold. Together, we take it to a jeweller, who assays it while we wait. As long as the purity and carat check out, I give the Scammer 50% of the cost of 5kg of gold upfront ($75 000 USD approx) in cash. Within a few days, the Boss in Ghana sends me the 5kg by courier. I then pay the remaining 50% by bank transfer. Of course, there is no gold and my 50% upfront cash payment is gone."
This video was sent to me by a Facebook friend and I found it fascinating.