Before end of night, left wearing charmer's ring (7)

I believe the answer is:

circlet

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'charmer's ring' is the definition.
'circlet' can be an answer for 'ring' (I've seen this in another clue). I'm not certain of the 'charmer's' bit.

'before end of night left wearing' is the wordplay.
'before' becomes 'circe' (I can't justify this - if you can you should believe this answer much more).
'end of' indicates one should take the final letters.
'left' becomes 'l' (common abbreviation).
'wearing' is an insertion indicator.
The last letter of 'night' is 't'.
'circe'+'t'='circet'
'circet' going around 'l' is 'CIRCLET'.

Can you help me to learn more?

(Other definitions for circlet that I've seen before include "Ornamental headband" , "Little hoop" , "Metal band" , "Small round shape" , "Diadem" .)

I've seen this clue in The Times.

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