Actually, pearls aren't "oyster poo" (lol)...they're made of the same stuff the oyster's (or whatever mollusk its in's) shell is made of (calcium something-or-other). What starts it is usually a piece of dirt or salt or whatever that gets caught inside the oyster though.
And don't get me wrong, I think roses are pretty and all, but they're way too popular and overused for my taste. Yeah, honeysuckles do taste good too.
There's some Lily of the Valley growing underneath the Lilac bushes at my house too. Just Lilies as a group are my favorite kind of flowers, the Stargazer Lily and Casablanca Lily are my favorites in the group though.