Platinum, 18ct gold, diamond and emerald brooch, the Art Deco style bar brooch is millegrain-set with a line of rose-cut diamonds centring an open-work motif of six interlocking loops alternately set with diamonds and calibre-cut emeralds, each loop framing a collet-set old brilliant-cut diamond, the diamonds and emeralds together weighing approximately 2.30 and 2.10 carats respectively, length approximately 83 mm.