Stone lies around in Ireland (7,4)
I believe the answer is:
emerald isle
'ireland' is the definition.
(synonyms)
'stone lies around in' is the wordplay.
'stone' becomes 'emerald' (I've seen this before).
'around' indicates an anagram.
'in' is an insertion indicator.
'lies' with letters rearranged gives 'isle'.
'emerald' put into 'isle' is 'EMERALD ISLE'.
(Other definitions for emerald isle that I've seen before include "divided country" , "jewel of a place" , "Name for Ireland" , "where one might get whiskey" .)