All I know is they have calcium carbonate.
I don't know the others, don't ask questions here. They'll give you a wrong answer...just search it in Google or wikipedia.
go to wikipedia.org and search "Oyster" and there you go
P.S. I'm just helping you and I'm not making fun of you
Slimy goodness
pearl
A "Pearl Oyster" is a shell that is found on the beach, washed in by the sea, and is worth 1200 bells and are the most expensive shell in the game.
Pearls, I believe.
pearl
CaCo3 or calcium carbonate is one of the major component of oyster shell.:d
we offer oyster shells and many other seashells .. please write to us at jellyfish@sltnet.lk
An oyster
It is a shell, as in a cockle shell or oyster shell.
oyster shell are used to extract calsium which is used in medicine and health suppliments etc. also shell powder is used in making cement
The possessive form of the noun oyster is oyster's.Example:You're always hoping for a pearl when you open an oyster's shell.
Paua shell or oyster shell (mother of pear)
Pearl