Gold Nugget

Gold Nuggets are Vanilla items. They can be obtained by killing Pigmen in the Pigman's Den and the Blazing Fortress.

Mobs
Zombie Pigmen drop Gold Nuggets upon death. You can also get them from crafting, as shown below.

Trivia
Gold nuggets are commonly used in scams where the scammer puts in money, then exits out and says it lagged him out, lets try again. Then, the scammer puts in gold nuggets instead of coins and the victim gets scammed.