ELI5: Explain Like I'm 5

Pearl

A pearl is a very beautiful and special thing that comes from inside a shell of certain seafoods like oysters and clams. Imagine you are walking on the beach and find a special rock. Inside that rock, there is a tiny creature called an oyster. This little creature makes a special substance called nacre to protect itself. Over time, the nacre builds up and forms a beautiful round shape, just like when you make a snowball. This is what a pearl looks like! The pearl can have different colors like white, pink, black and many more. People love to wear pearl necklaces, earrings or bracelets because they are very special and look very pretty.