Flash from top of golden material (5)
I believe the answer is:
glint
'flash' is the definition.
(glint is a kind of flash)
'top of golden material' is the wordplay.
'top of' suggests taking the first letters.
'material' becomes 'lint' (lint is a kind of material**).
The initial letter of 'golden' is 'g'.
'g'+'lint'='GLINT'
'from' acts as a link.
(Other definitions for glint that I've seen before include "Brief indication" , "Shine" , "Bright, brief gleam" , "Spark" , "Flash of reflected light" .)