An Art Deco platinum, star sapphire and diamond bracelet. Photo Christie's Image Ltd 2013

The central collet-set cabochon star sapphire to a pierced, articulated panel of geometric design millegrain-set with old single-cut diamonds, between diamond pierced panel articulated shoulders each set in the centre with an old brilliant-cut diamond collet, to a brilliant and baguette-cut diamond articulated tapering back, circa 1925, 17.0cm long. Estimate: £5,000 - £7,000

Christie's. Jewellery.16 January 2013. London, South Kensington