An art deco emerald and diamond brooch, circa 1925. Photo courtesy Bonhams.

The central step-cut emerald, between highly stylised anthemion motif shoulders, within a pierced crenellated border, millegrain-set throughout with old brilliant and single-cut diamonds, mounted in platinum, emerald approximately 9.30 carats, diamonds approximately 3.50 carats total, partial maker's mark, French assay marks, diameter 6.5cm. Sold for £16,250 (€19,547)

Bonhams. FINE JEWELLERY INCLUDING SELECTED JEWELS FROM THE COLLECTION OF BARBARA TAYLOR BRADFORD. London, New Bond Street. 5 Dec 2013 -www.bonhams.com