Woman holding garnet reformed magic symbol (9)
I believe the answer is:
pentagram
'magic symbol' is the definition.
'pentagram' can be an answer for 'symbol' (I have seen 'Mystical symbol' mean 'pentagram' so perhaps 'symbol' could also mean 'pentagram'). I'm unsure of the 'magic' bit.
'woman holding garnet reformed' is the wordplay.
'woman' becomes 'pam' ().
'holding' means one lot of letters goes inside another.
'reformed' indicates anagramming the letters.
'garnet' with letters rearranged gives 'entagr'.
'pam' placed around 'entagr' is 'PENTAGRAM'.
Can you help me to learn more?
(Other definitions for pentagram that I've seen before include "Star-shaped figure" , "Mystical symbol" , "Five-pointed star" , "magical symbol" , "Five pointed star" .)