These fancy-cut aquamarine and diamond clipback earrings are mounted in platinum and date from the mid-20th century. Their circular-fancy-cut aquam...

This rare Cartier Paris aquamarine brooch with its bold diamond chevron patterning dates from the 1930s, when designers created a dynamic series of...

This asymmetrical pair of ombré "Lilac-Leaf" brooches by René Boivin are an Art Moderne study in the interplay of color and stylization of form. Th...

Dating from circa 1940, this Art Moderne gold brooch, bezel-set with a rainbow of seventy-eight variously colored round and oval-cut tourmalines, a...