pearls
Pearls, I believe.
Pearl (the precious object sometimes found in an oyster), is spelled thus.
Pearls are found in an oyster.
on rocks
Yes
An oyster can be found outside the back of the house, in the swimming pool.
Oyster
oyster
They can be found almost any shelled mollusk such as the pearl oyster
pearl
Pumice is neither. It is not a gem stone nor a precious stone. It is often used to clean toilets and other objects.
You can use the word "oyster" to refer to a type of shellfish commonly found in coastal waters. It can also be used to describe the color, shape, or size of something that resembles an oyster shell. Additionally, it can be used metaphorically to refer to something that is hidden or hard to access.