Nordic gold is the gold-coloured copper alloy from which the middle three denominations of euro coins, 50 cent, 20 cent, and 10 cent coins are made. It has also been in use for a number of years in other countries, most notably in the Swedish 10-krona coin for which it was originally developed (hence the Swedish name: nordiskt guld). Its composition is 89% copper, 5% aluminium, 5% zinc, and 1% tin.