Vintage Aquamarine Diamond and Platinum Cluster Brooch, Circa 1930

A vintage aquamarine and diamond cluster brooch, with an emerald-cut, pale aquamarine, in a claw setting, surrounded by old-cut diamonds, in millegrain edged rub over settings, with diamond set quatrefoils, in each corner, mounted in platinum, with a white gold pin and roller catch, circa 1930.