"Fool for Gold" is an episode from the Disney Jr. series Sheriff Callie's Wild West, which aired on March 7, 2014.
Plot[]
When Uncle Bun finds a huge nugget of gold in his backyard, he thinks that he's rich and that he can use the so-called gold nugget to move to the big city because he is convinced it's the real thing. But after he finds out that the nugget is actually fool's gold (AKA Pyrite)...which is worth not a lot of money, Uncle Bun soon has to tell everyone the truth, but becomes too afraid to speak up because he would feel like a fool himself.