Gold ore so useless, one happy with silver? (4,5)

I believe the answer is:

good loser

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'one happy with silver?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'gold ore so useless' is the wordplay.
'useless' indicates an anagram.
'gold'+'ore'+'so'='goldoreso'
'goldoreso' anagrammed gives 'GOOD LOSER'.

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I've seen this clue in The Guardian.

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