Large gem carrying bit of sparkle for a bishop (9)
I believe the answer is:
episcopal
'for a bishop' is the definition.
I can't tell whether this defines the answer.
'large gem carrying bit of sparkle' is the wordplay.
'large' becomes 'epic' (similar in meaning).
'gem' becomes 'opal' (opal is a kind of gem).
'carrying' is an insertion indicator.
'bit of sparkle' becomes 's' (I am not sure about this - if you are sure you should believe this answer much more).
'epic'+'opal'='epicopal'
'epicopal' enclosing 's' is 'EPISCOPAL'.
Can you help me to learn more?
(Other definitions for episcopal that I've seen before include "work of bencher" , "To do with bishop - maybe Pepsi-Cola" , "sees can be described thus" , "Pepsi-Cola (anag) - pertaining to a bishop" , "Relating to bishops" .)