fil ‧ i ‧ gree /ˈfɪləɡriː, ˈfɪlɪɡriː/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Language: French ; Origin: filigrane , from Latin filum 'thread' + granum 'grain' ]
delicate designs or decorations made of gold or silver wire:
silver filigree jewellery