A ruby, diamond and gold bracelet, by Buccellati. Photo: Christie's Images Ltd 2010

Designed as a textured 18k gold hinged cuff, set with three bezel-set oval-cut rubies, each within a circular-cut diamond openwork foliate surround, mounted in 18k yellow and white gold, 2¼ ins. diameter, in a Mario Buccellati navy blue leather case. Signed M. Buccellati for Mario Buccellati, Italy - Estimate $20,000 - $30,000

With a copy of a letter from Luca Buccellati stating that this bracelet is an original Mario Buccellati jewel

A diamond and emerald brooch, by Buccellati. Photo: Christie's Images Ltd 2010

Of foliate design, set with three emerald bead blossoms, to the scrolling rose-cut diamond leaves and textured gold buds, mounted in gold and silver. Signed M. Buccellati for Mario Buccellati Estimate $1,500 - $2,000

Christie's, New York Jewels, 15 June 2010, New York, Rockefeller Plaza www.christies.com