Bulgari. A sapphire, citrine, diamond and chalcedony necklace,the detachable pendant of cross pattée form with central sapphire cabochon and citrine cabochons, to white chalcedony ground and brilliant cut diamond borders, suspended from a curb link chain with lozenge shaped chalcedony and diamond quatrefoil stations with a sapphire or citrine cabochon centre, signed Bulgari, made in Italy, stamped 750 18kt, circa 1970, pendant length 6.3cm, chain length 45.5cm

Composed of several subsidiaries, the Drouot Group is a major player in the art market. Hôtel Drouot, located in the heart of Paris, has been the world's largest public auction center since 1852. 15 salerooms are available to more than 70 auction houses. The emulation generated by an annual offer of 230,000 artworks from 21 major specialities - from Antiquity to street art - attracts some 3,000 visitors every day. The Group's digital platform, Drouot.com, offers digital sales - Live auctions (live broadcasting and participation in auctions), Online-only auctions (dematerialised auctions) and Buy Now sales (sales of lots at fixed prices). Nearly 2 million items are offered annually by 600 auction houses. Auction news is reported every week in La Gazette Drouot, the leading weekly magazine for the art market and culture published by Auctionspress.