Coquette and Romeo finding depravity in China (3,7)
I believe the answer is:
tea service
'china' is the definition.
(I've seen this before)
'coquette and romeo finding depravity' is the wordplay.
'coquette' becomes 'tease' (I've seen this in another clue).
'and' says to put letters next to each other.
'romeo' becomes 'R' (phonetic alphabet: alpha, bravo, charlie etc.).
'finding' means one lot of letters go next to another.
'depravity' becomes 'vice' (moral depravity).
'tease'+'r'+'vice'='TEA-SERVICE'
'in' is the link.
(Other definitions for tea service that I've seen before include "China possibly" , "Cups, saucers, plates, etc" , "that may be brought to the table" , "China pieces" , "crockery" .)