An Art Deco gem-set open foliate bar brooch

An Art Deco gem-set open foliate bar brooch, c1925, centred with a sugarloaf emerald and millegrain-set with small circular-cut diamonds, cabochon sapphires and further emeralds, in platinum, the rectangular frame with black enamel decoration and with two square-shaped diamonds to each terminal, white gold pin, stamped with multiple marks including French control marks and initials ST, 5.5cm wide

Accompanied by original purchase receipt from A. Aardewerk, Belgium dated 2nd April 2008.