Number ones from Simple Minds, say, after Rolling Stones (4)
I believe the answer is:
gems
'rolling stones' is the definition.
'gems' can be an answer for 'stones' (precious stones). I am not sure about the 'rolling' bit.
'number ones from simple minds say after' is the wordplay.
'number' becomes 'G' (G is an example).
'ones from simple minds say' becomes 'ems' (I can't justify this - if you can you should give a lot more credence to this answer).
'after' says to put letters next to each other.
'g'+'ems'='GEMS'
Can you help me to learn more?
(Other definitions for gems that I've seen before include "Jewels" , "Valuable stones" , "Precious stones" .)