Lot 230, a diamond necklace by Cartier, designed a a series of graduated openwork old European and single-cut diamond swirling plaques in platinum, circa 1942 (estimate: US$450-650,000)

Lot 230, a diamond necklace by Cartier, designed a a series of graduated openwork old European and single-cut diamond swirling plaques in platinum, circa 1942 (estimate: US$450-650,000).