Here is what I have found so far:
Crown *Beach*
Scepter *Jungle Rat Shop*
Diamond Collar *Gift from George Downtown*
Golden Shield *Well on Mountain*
Statue *Gift from Ranger*
Jeweled Box *Gift from Farmer*
Royal Crest *Red House in Jungle*
Signet Ring *Sandcastle in Vacation Island*
Sword *Gift from Giant in Magma Mountain*
Royal Water Dish *Secret Island with Mini Pet*
This makes ten.
I am still missing two.