Gemstones worn, bringing sexy back (6)

I believe the answer is:

onyxes

'gemstones' is the definition.
(onyx is a kind of gemstone)

'worn bringing sexy back' is the wordplay.
'worn' becomes 'on' (as in having clothes on).
'bringing' is a charade indicator (letters next to each other).
'back' says the letters should be written in reverse.
'sexy' reversed gives 'yxes'.
'on'+'yxes'='ONYXES'

(Another definition for onyxes that I've seen is " Stones".)

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

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