The riddle wasn't answered.

[balphegor]

I am referring of course to this post:
http://mysardinia.com/1595/an-old-sardinian-riddle/

Translated in English:
It is round, but it is not the earth,
It is red, but it is not fire,
It is green, but it is not grass,
It is water, but it is not a spring.

Did Barberini ever revealed the answer? Anyone would like to hazard a guess?

[kissmelater]

I am not good at riddles.. but I really would like to know the answer. It sounds intriguing... HELP! HELP! Riddles fanatics...

[Angel Blake]

That's a tough one...:p

[Peter Pantsed]

I literally have been losing sleep trying to figure out the answer to that riddle. I don't think even Batman knows how to answer that.