Crossword Genius

A diamond ring turned up in the end? (5)

Ross

I believe the answer is:

omega

'the end?' is the definition.
(thesaurus)

'a diamond ring turned up' is the wordplay.
'diamond' becomes 'gem' (I've seen this in other clues).
'ring' becomes 'o'.
'turned up' is a reversal indicator.
'a'+'gem'+'o'='agemo'
'agemo' written backwards gives 'OMEGA'.

'in' is the link.

(Other definitions for omega that I've seen before include "Traditional story" , "Ending of a series or sequence" , "Last thing" , "completes a series" , "Greek long 'o'" .)

I've seen this clue in The Times.
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