EDWARDIAN ART NOUVEAU-INFLUENCED PLATINUM-ON-YELLOW-GOLD AND DIAMOND BROOCH. Six old mine cut diamonds together weighing app. 2.25 ct. with app. 70 smaller round diamonds in scrolling openwork ribbon design setting. Total diamond Wt.: app. 4.75 ct.; L: 1 7/8 in. Estimate $1,500-2,500