Ice-suit (8)
I believe the answer is:
diamonds
This clue is a double definition.
'ice' is the first definition.
'suit' is the second definition.
(I've seen this before)
(Other definitions for diamonds that I've seen before include "where some Americans find sporting action" , "Maids don these gems" , "Very hard pieces of crystalline carbon" , "Red cards" , "Musically, they're a girl's best friend" .)