A bouquet of sapphire and diamond flowers brooch, by Buccellati. Photo Christie's Image Ltd 2014

Designed as a bouquet of circular-cut diamond flower blossoms, each centering upon a circular-cut sapphire pistil, to the textured 18k gold leaves, mounted in 18k white, yellow and rose gold. Signed Buccellati. Estimate $5,000 – $7,000

Christie's. MAGNIFICENT JEWELS, 16 April 2014, New York, Rockefeller Plaza - www.christies.com