A sapphire, emerald and diamond ring, of toi et moi design, set with a step-cut sapphire weighing

A sapphire, emerald and diamond ring, of toi et moi design, set with a step-cut sapphire weighing 8.21 carats and a step-cut emerald weighing 1.83 carats, within a foliate border of circular-cut, baguette and marquise-shaped diamonds, mounted in platinum, size P, stamped PLAT, sponsor's mark WB

Accompanied by report nos. 20765 and 20783 from the Gem & Pearl laboratory, stating that the sapphire is of Sri Lankan (Ceylon) origin, with no indications of heat treatment, and the emerald is of Colombian origin, with indications of moderate clarity enhancement, a verbal report from GCS additionally stating that the sapphire is of Sri Lankan (Ceylon) origin, with no indications of heat treatment