The largest truffle is a Tuber magnatum pico that weighed in at 1,786 g (62.99 oz) on 4 December 2014, down from a reported 1,890 g (66.66 oz), owing to evaporation, when it was found a week earlier in central Italy.

The champion truffle was sold by Sabatino Tartufi (Italy/USA) to a phone bidder from Chinese Taipei at Sotheby’s New York auction house on 6 December 2014 for $61,250 (£39,154) including 22.5% buyer’s premium.
See the official news: