Flexible or moulded piece of platinum (6)
I believe the answer is:
pliant
'flexible' is the definition.
(I know that flexible can be written as pliant)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for pliant that I've seen before include "Accommodating" , "easily controlled" , "Flexible, easily bent or influenced" , "Supple or flexible" , "Plastic" .)