Sculpt stones for adopted kid (6,3)

I believe the answer is:

foster son

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'adopted kid' is the definition.
The definition suggests a singular noun which matches the answer.

'sculpt stones for' is the wordplay.
'sculpt' is an anagram indicator.
'stones'+'for'='stonesfor'
'stonesfor' is an anagram of 'FOSTER-SON'.

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(Another definition for foster son that I've seen is " re-housed kid?".)

I've seen this clue in the Sydney Morning Herald.

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