Gold or silver (5)
I believe the answer is:
metal
I believe this clue is a double definition.
'gold' is the first definition.
(thesaurus)
'silver' is the second definition.
(I've seen this in another clue)
(Other definitions for metal that I've seen before include "Silver or gold, say" , "Material detectable in the ground" , "Copper or gold, say" , "Eg, titanium" , "Substance as gold, iron" .)