A Belle Epoque pearl and diamond sautoir. Photo Christie's Image Ltd 2007

Suspending a drop-shaped pearl, from a detachable rose and old European-cut diamond pierced garland plaque, set with a grayish brown button pearl, to the diamond openwork circular link and grayish brown and white pearl six-strand necklace, enhanced by rose-cut diamond and pearl scrolls, joined by a diamond ribbon clasp, mounted in platinum, (detachable pendant may also be worn as a brooch), circa 1905, 30 ins., with French importation mark. Estimate $12,000 - $15,000. Price Realized $26,400

Please note that the pearls have not been tested for natural origin

Christie's. IMPORTANT JEWELS, 13 June 2007, New York, Rockefeller Plaza - www.christies.com