Busy art dealer finally flogged gem (4,4)

I believe the answer is:

star ruby

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'gem' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'busy art dealer finally flogged' is the wordplay.
'finally' suggests the final letters.
'flogged' is an anagram indicator.
The last letter of 'dealer' is 'r'.
'busy'+'art'+'r'='busyartr'
'busyartr' with letters rearranged gives 'STAR RUBY'.

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I've seen this clue in The Times.

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