Valentina Vezzali, Elisa Di Francisca - now a double gold medal-winner in London - and new world number one Arianna Errigo were in unstoppable form all day and took the title with a 45-31 victory over Russia.
The Russians were the defending champions, having defeated Italy by a single point - 22-21 - in the semi-finals in Beijing.
They even felt comfortable enough to bring on substitute Ilaria Salvatori for one bout near the end so she could also receive a gold.
She lost 9-5, but it did not matter - their only other defeat in 27 three-minute contests during the entire competition was Vezzali's in the very last head-to-head.
Bronze went to Republic of Korea after they got the better of France 45-32.