Small stand with light showed brilliance (8)
I believe the answer is:
sparkled
'showed brilliance' is the definition.
(to sparkle is to show light brilliantly)
'small stand with light' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'stand' becomes 'park' (both can mean to place something somewhere).
'with' is a charade indicator (letters next to each other).
'light' becomes 'led' (abbreviation for light emitting diode).
's'+'park'+'led'='SPARKLED'
(Other definitions for sparkled that I've seen before include "Scintillated, shone" , "Scintillated, flashed" , "Glittered, scintillated" .)