Description An Art Deco Onyx and Diamond Brooch, Cartier, France, circa 1915 Of circular design, the plaque centering an old European-cut diamond, the body of grid motif with alternating patterns of onyx and smaller old European-cut diamonds diamonds, bordered by a continuous course of calibre-cut onyx and a row of diamond quartets between onyx arrows, mounted in platinum, signed Cartier and numbered 5572
Property from the Estate of John Pierpont Morgan