The Lombardi Trophy is made of sterling silver.
Every year, the famously lightweight trophy is made by silversmiths at Tiffany & Co. The process takes just over four months.
The trophy itself is a silver cast of a normal football, sitting atop a pyramid-shaped base.'
The Lombardi trophy isn't the only major sports trophy made of sterling silver, either. The Commissioner's Trophy – the prize for whichever team wins the World Series every year – is also made from the precious metal.