Emerald and diamond brooch, the square step-cut emerald weighing 20.19 carats within a surround of round brilliant, baguette and marquise-cut diamonds, estimated total diamond weight 4.20 carats, on diamond deficient, platinum, weight 25.7gm, measuring approximately 3.5 x 3.5 cm. Accompanied by GSL report no. AA67898, dated 26 June 2023, stating that the emerald is of Colombian origin.