Panel with gold picture (7)
I believe the answer is:
tableau
'picture' is the definition.
(I've seen this before)
'panel with gold' is the wordplay.
'panel with' becomes 'table' (I can't explain this - if you can you should give a lot more credence to this answer).
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'table'+'au'='TABLEAU'
Can you help me to learn more?
(Other definitions for tableau that I've seen before include "A scene with silent motionless group of people" , "Motionless figures representing a story" , "Diorama; vignette" , "Frozen stage scene" , "Group of people arranged as for a painting say" .)