Heard gold or silver might be given for courageous resilience (6)
I believe the answer is:
mettle
'resilience' is the definition.
(I've seen this before)
'heard gold or silver' is the wordplay.
'heard' shows a homophone (sound like).
'gold or silver' becomes 'metal' (I've seen this in another clue).
'metal' is a homophone of 'METTLE'.
'might be given for courageous' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for mettle that I've seen before include "Bravery" , "Strength of character, courage" , "boldness" , "Spirit, resilience" , "Fortitude" .)