Bit of finery (3)

I think it could be either:

Which length description are you looking for?:

gem

'bit of finery' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for gem that I've seen before include "Diamond, ruby, or emerald" , "perfect specimen" , "Pleasant and cheerful (from German)" , "A precious stone like a diamond or emerald etc" , "Valuable stone" .)

I've seen this clue in the LA Times.

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