An early 20th century diamond brooch and a diamond flower brooch

An early 20th century diamond brooch and a diamond flower brooch
The first of pierced lozenge shape with central foliate motif, millegrain-set with old-cut diamonds, mounted in gold and platinum, circa 1920, 3.4cm long, cased; the other of openwork flowerhead design set with brilliant-cut diamonds throughout, 2.3cm long
Partially illustrated (2)