Important and very fine natural pearl and diamond necklace, Cartier, 1930s. Photo Sotheby's

Composed of five graduated rows of natural pearls, measuring from approximately 3.75 to 12.05mm, set to the sides with two shield-shaped plaques, set with circular- and single-cut diamonds, length of shortest row approximately 453mm, signed Cartier and numbered. Estimate 800,000-1,100,000 CHF

Accompanied by SSEF report no. 60841 stating that the three hundred and fifty two pearls are saltwater natural pearls. 

Sotheby's. Magnificent Jewels, Geneva | 15 Nov 2011 www.sothebys.com