An early 19th century diamond-set foliate brooch

An early 19th century diamond-set foliate brooch, the centre diamond flowerhead cluster mounted 'en tremblant' and centred with a large asymmetrical circular-cut diamond in a cut-down collet, within a diamond-set pendant, further diamonds set to the leaves and flowerheads in silver and gold, detachable brooch fitting, 7cm wide, fitted case by S.J.Phillips, additional brooch fitting