Crossword Genius

Travel around Massachusetts to score a gemstone (10)

Ross

I believe the answer is:

tourmaline

'a gemstone' is the definition.
(I know that tourmaline is a type of transparent gem)

'travel around massachusetts to score' is the wordplay.
'travel around' becomes 'tour' (synonyms).
'massachusetts' becomes 'ma'.
'to score' becomes 'line' (lining is a kind of scoring).
'tour'+'ma'+'line'='TOURMALINE'

(Other definitions for tourmaline that I've seen before include "Beautiful grey or black mineral" , "Beautiful blackish mineral" .)

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