The octagonal-cut emerald set within a narrow diamond border to the segmented circular-cut diamond surround and shoulders, circa 1935, size 51, with French assay mark for platinum. Designed by Suzanne Belperron, with maker's mark for Atelier Groene et Darde (partially illegible). Estimate CHF10,000 - CHF15,000 - Price Realized CHF 20,000