A phenomenal Edwardian cabochon Columbian emerald ring mounted in platinum with eight-cut diamond set shoulders. The vibrant Columbian emerald is four claw set in wide ridged claws, and embellished with eight-cut diamonds channel and grain set to the platinum shoulders. The ring is finished with an exquisite hand sawn pierced openwork undercarriage with a floral motif. Estimated Columbian emerald weight: 8.22cts.