Fancy gemstone inlaid with an exotic fruit (10)

I believe the answer is:

mangosteen

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'exotic fruit' is the definition.
'mangosteen' can be an answer for 'fruit' (mangosteen is a kind of fruit). I'm not sure about the 'exotic' bit.

'fancy gemstone inlaid with an' is the wordplay.
'fancy' indicates anagramming the letters.
'inlaid with' is an insertion indicator.
'gemstone' is an anagram of 'mgosteen'.
'mgosteen' going around 'an' is 'MANGOSTEEN'.

Can you help me to learn more?

(Another definition for mangosteen that I've seen is " Tropical fruit".)

I've seen this clue in The Guardian.

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