Get diamonds first in the country (7)
I believe the answer is:
iceland
'the country' is the definition.
(Iceland is an example)
'get diamonds first' is the wordplay.
'get' becomes 'land' (landing is a kind of getting).
'diamonds' becomes 'ice' (slang term for diamonds).
'first' means one lot of letters go next to another.
'land' after 'ice' is 'ICELAND'.
'in' acts as a link.
(Other definitions for iceland that I've seen before include "European island country" , "Cold Atlantic country" , "Nice lad (anag)" , "Its capital is Reykavik" , "Former Danish colony" .)