Refinements in attractive neckwear (8)
I believe the answer is:
niceties
'refinements' is the definition.
('nicety' can be a synonym of 'refinement')
'attractive neckwear' is the wordplay.
'attractive' becomes 'nice' (nice can mean pleasant or attractive).
'neckwear' becomes 'ties' (I've seen this in another clue).
'nice'+'ties'='NICETIES'
'in' acts as a link.
(Other definitions for niceties that I've seen before include "delicacies" , "Shades" , "Delicacy" , "Fine points" , "Degrees of precision" .)