Galleons are the most valuable currency in the wizarding world of Great Britain. It is made of pure gold and is regulated and produced by the Ministry of Magic. It is equal to 17 Sickles or 493 Knuts. In the middleof the 1200's one Galleon then was worth 6,666 now. Leprechaun Gold looks exactly like a Galleon. Though Lephrechaun Gold dissappears after a few hours. They are used by criminals on some occasions as fake Galleons.