It's far from dull as Margaret's parent (6-2-5)
I believe the answer is:
mother-of-pearl
I believe this clue is a double definition.
'it's far from dull' is the first definition.
'margaret's parent' is the second definition.
(Margaret means pearl)
'as' acts as a link.
(Other definitions for mother-of-pearl that I've seen before include "Nacre" , "Decorative substance got from certain molluscs" , "girl's mum" , "Internal layer of shell" , "Iridescent material used in ornamentation" .)