Find Alfredo in Grenada. Wait in his shop until he asks you to get something for him.
Obtain the item.
Return to the shop and give the item to him.
-> You get xp!
-> You get 1000 gp!
-> You get a whois: ...sought out rare and unusual artifacts for an eccentric collector.
Crystal Apple - located in Agrabah, during the djinn quest in the desert cavern you can find the apple in a tree