Every business day in London, five banks meet to set the price of gold in a ritual that dates back to 1919. But currently, Bloomberg News reports, dealers and economists are saying that the knowledge obtained during that ritual has the potential to give some traders an unfair advantage in the $20-trillion gold market. The upshot is that the UK Financial Conduct Authority is scrutinising how prices are set. In platinum, there are worrying ironies as well as platinum prices stubbornly refuse to head higher despite all and sundry forecasting substantial deficits. Physical platinum delivery is conveniently absent in the myriad of futures trades that are dragging prices down to levels that render mining loss making, with serious potential consequences. It is time for the brightest of spotlights to be shone on the current opaque manner in the prices of these precious metals are determined.