The French diamonds rest awkwardly on cheese (9)
I believe the answer is:
leicester
'cheese' is the definition.
(I've seen this before)
'the french diamonds rest awkwardly' is the wordplay.
'the french' becomes 'le' ('the' in French).
'diamonds' becomes 'ice' (slang term for diamonds).
'awkwardly' indicates anagramming the letters.
'rest' anagrammed gives 'ster'.
'le'+'ice'+'ster'='LEICESTER'
'on' is the link.
(Other definitions for leicester that I've seen before include "Queen's favourite" , "City, Robert Dudley" , "London film premiere location" , "Midland city" , "Cheese; town" .)