An Art Deco seed pearl and diamond sautoir, by Raymond Yard. Photo Christie's Image Ltd 2013

Suspending a multi-strand seed pearl tassel, from an old mine-cut diamond cap and a line of pearl and bezel-set diamonds, to a three-strand seed pearl necklace, intersected by bezel-set and old mine-cut diamond openwork plaques, mounted in platinum, circa 1925, 30½ ins. Signed Yard for Raymond Yard. Estimate:  $30,000 – $50,000

Christie's. MAGNIFICENT JEWELS. 10 December 2013.New York, Rockefeller Plaza - www.christies.com