Criminal selling amber sculptures (5,7)
I believe the answer is:
elgin marbles
'criminal' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's a link between them I don't understand?
'selling amber sculptures' is the wordplay.
'sculptures' is an anagram indicator (I've seen 'sculpture' mean this).
'selling'+'amber'='sellingamber'
'sellingamber' anagrammed gives 'ELGIN MARBLES'.
Can you help me to learn more?
(Other definitions for elgin marbles that I've seen before include "some old stones" , "a lot of relief shown in London" , "5th Century BC Greek sculptures brought to England" , "Sculptures from the Parthenon, held by the British Museum" , "Statuary from the Parthenon" .)