An Art Deco An Art Deco onyx and diamond bracelet, circa 1930. Estimate £20,000 - 30,000 (€27,000 - 41,000). Photo Bonhams.

The highly articulated tapering strap of geometric design, pierced and set throughout with old brilliant, brilliant and baguette-cut diamonds and calibré-cut onyx decoration, with a principal step-cut diamond to the centre, mounted in platinum with millegrain detail, principal diamond approximately 2.00 carats, remaining diamonds approximately 11.00 carats total, numbered, French assay marks, bracelet length 18.5cm

Bonhams. FINE JEWELLERY, 24 Sep 2015 12:00 BST -LONDON, NEW BOND STREET