18ct white gold, emerald and diamond ring, circa 1960. centring a rectangular step-cut emerald weighing 4.81 carats between stepped baguette diamond shoulders together weighing approximately 1.36 carats, size N. Accompanied by an AGL report no. 1102096, dated 2 August 2019, stating that the 4.81 carat emerald is of Colombian origin, with no indication of clarity enhancement.