An early 20th century sapphire and diamond bar brooch. Photo Christie's Image Ltd 2014

Of elongated oval outline, the central cushion shaped sapphire to a brilliant-cut diamond millegrain-set panel surround, with pierced linear detailing, circa 1905, 8.2cm long. Estimate £60,000 - £80,000 ($100,440 - $133,920). Price Realized £182,500 ($304,958)

Accompanied by report no.74161 dated 14 April 2014 from The Swiss Gemmological Institute (SSEF), stating the sapphire is natural, with no indications of heating, origin Kashmir

Christie's. IMPORTANT JEWELS,4 June 2014, London, King Street - http://www.christies.com/