Material of gold, not initially cut into strip abroad (7)
I believe the answer is:
organza
'material' is the definition.
(organza is a kind of material)
'gold not initially cut into strip abroad' is the wordplay.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'initially' says to take the initial letters.
'cut into' means one lot of letters goes inside another.
'strip abroad' becomes 'gaza'.
The initial letter of 'not' is 'n'.
'n' going inside 'gaza' is 'ganza'.
'or'+'ganza'='ORGANZA'
'of' is the link.
(Other definitions for organza that I've seen before include "Silky cloth" , "Thin stiff dress fabric" , "Transparent silky material" , "Transparent silk material" , "Thin material" .)