Tend to work around diamonds when tempted (7)
I believe the answer is:
enticed
'tempted' is the definition.
('entice' can be a synonym of 'tempt')
'tend to work around diamonds' is the wordplay.
'to work' indicates anagramming the letters (letters worked into a new order).
'around' indicates putting letters inside.
'diamonds' becomes 'ice' (slang term for diamonds).
'tend' is an anagram of 'entd'.
'entd' placed around 'ice' is 'ENTICED'.
'when' is the link.
(Other definitions for enticed that I've seen before include "were seductive" , "Given inducement" , "Tempted, lured" , "Persuaded with attractive offer" .)