A Marble and a Pearl

Those are the Marbles. 

Marbles have different Colors on them. 

Those Marbles were made out of Glass,

Everybody likes to play a Game called Marbles 

when they were shooting at them. 

This is a Pearl. 

It grows from an Oyster after the Sand irritate it. 

In Ducktales Episode called "Pearl of Wisdom", 

Huey, Dewey, Louie, and Webby thought it was Scrooge's Masher, 

but Scrooge McDuck told his them 

it was not a Marble, it was a Pearl 

which means it's the Pearl of Wisdom 

on the Banana Island. 

In the Movie called "Gumby the Movie" 

Goo found a Pearl in the Hay with Lowbelly. 

Goo thought it was a Marble that she found in Hay. 

Gumby doesn't think it was a Marble, 

it looked like a Pearl. 

These Pearls came from Lowbelly's Eyes when he was crying 

for Gumby changed into something cool.