An Art Deco cabochon emerald and diamond cluster ring, the oval cabochon-cut emerald estimated to weigh 4,0 carats, accompanied by The Gem & Pearl Lab. Report stating that is of Colombian origin, set to the centre of a double cluster of sixty round and cushion old-cut and ten rose-cut diamonds, with a daylight in-between to a platinum mount with diamond-set split shoulders, gross weight 4.47 grams, circa 1925, head measuring 1.6x1.6 cm, finger size I 1/2, gross weight 4.47 grams. This…