Stone lies around in Ireland (7,4)
I believe the answer is:
Here is my best explanation:
'ireland' is the definition.
('Emerald Isle' can be a synonym of 'ireland')
'stone lies around in' is the wordplay.
'stone' becomes 'emerald' (I've seen this before**).
'around' indicates an anagram.
'in' means one lot of letters goes inside another.
'lies' is an anagram of 'isle'.
'emerald' inserted inside 'isle' is 'EMERALD ISLE'.
(Other definitions for emerald isle that I've seen before include "jewel of a place", "Name for Ireland", "Country", "divided country" and "where one might get whiskey".)