1960s Aquamarine & Diamond Cocktail Ring in 18kt Yellow Gold

1960s aquamarine and diamond cocktail ring in 18kt yellow gold. Set with an estimated 9.00ct octagonal step cut aquamarine in a four claw setting, set at each corner with a round brilliant cut diamond in platinum grain settings, to an octagonal cluster ring with a terraced linear border and open wirework gallery, flanked to either side with raised trumpeting shoulders which curve to a solid shank.