Emphasise superiority to partner, withholding gold, diamonds and charm (4,2,4)

'emphasise superiority' is the definition.

'partner withholding gold diamonds and charm' is the wordplay.
I cannot really understand how this works, but
'partner' could be 'e' and 'e' is present in the answer.
'gold' could be 'or' ('or' is the heraldic name for gold) and 'or' is located in the answer.
'diamonds' could be 'd' (abbreviation in bridge say) and 'd' is present in the answer.
'charm' could be 'it' (intangible human quality: 'she has it') and 'it' is found in the answer.
This may be the basis of clue (or it may be nonsense).

'to' is the link.

Can you help me to learn more?