To qualify as an IRA-approved product, precious metals must meet minimum fineness levels. The American Gold Eagle is the only exception to the following numbers. Minimum gold fineness: .995. Minimum silver fineness: .999. Minimum platinum fineness: .9995. Minimum palladium fineness: .9995. Any products falling outside of these ranges, excluding American Gold Eagles, are not approved for IRA contributions. Examples of non-approved precious metals products include pre-1933 gold, gold Krugerrands, and 90% US silver coins.