Jewel cleaner put back on side of dresser (7)
I believe the answer is:
diamond
'jewel' is the definition.
(I know that diamond is a type of jewel)
'cleaner put back on side of dresser' is the wordplay.
'cleaner' becomes 'maid' (I've seen this in another clue).
'put back' shows that the letters should be reversed in order.
'side of' suggests taking the first letters (the letter from one side of the word).
The first letter of 'dresser' is 'd'.
'maid' reversed gives 'diam'.
'diam'+'on'+'d'='DIAMOND'
(Other definitions for diamond that I've seen before include "Carbon gem" , "Small type" , "Precious stone for mad Odin" , "Hard precious stone" , "DOG" .)