1) Flash 2) Flash of wit 3) Glitter 4) Sparkle 5) The act of coruscating 
• (n.) A sudden flash or play of light. • (n.) A flash of intellectual brilliancy.
<symptom> Rarely used psychiatric term for a subjective sensation of a flash of light before the eyes. ... Origin: L. Corusco, to flash ... (05 Mar 2000) ... 
(kor″әs-ka´shәn) the sensation as of a flash of light before the eyes.
Cor`us·ca'tion noun [ Latin coruscatio : confer French coruscattion .] 1. A sudden flash or play of light. « A very vivid but exceeding short-lived splender, not to call ...t a little coruscation . Boyle. » 2. A flash of intellectual brillian...
[n] - a sudden or striking display of brilliance
noun a sudden or striking display of brilliance; `coruscations of great wit`
the act of coruscating. · a sudden gleam or flash of light. · a striking display of brilliance or wit.
the occurrence of a small flash or spark