Italian stocks plunged more than 3.0 percent Tuesday on renewed eurozone tenions and concerns over global growth following disappointing US jobs data. The benchmark FTSE Mib index in Milan was down 3.09 percent at 14,746 points at 1135 GMT, having spent the morning in negative territory after a report in business daily Il Sole 24 Ore that the government is set to slash its 2012 growth forecast.