An enamel and diamond brooch, early 20th century, designed as a hexagonal plaque, applied with blue
An enamel and diamond brooch, early 20th century, designed as a hexagonal plaque, applied with blue guilloché enamel, centring on a floral motif millegrain-set with circular-cut diamonds, within an outer border of rose-cut diamonds, mounted in gold and platinum, length 3.9cm