Worlds Most Expensive Precious Metal Rhodium Surges Amid Emissions Clampdown

The price of rhodium, a precious metal that strips pollutants out of exhaust fumes, is surging as car manufacturers in Asia and Europe scramble to abide by stricter emission regimes. Supplies of rhodium are limited because the metal is mined as a byproduct of platinum, palladium and gold, while demand is rising as regulators restrict…