Diamond and platinum Modele Facette ring by Belperron.

Ring mounting in a faceted design, the shank composed of 4 sculpted facets radiating from central octagon, set with an old-mine cut, circa 1932-74 made in Paris. With certificate authentication. Cape diamond measuring 16.4* 15.7 * 4.1mm. Size 8. French Assay mark for Platinum and Effaced makers mark.