A Silver, Aquamarine and Green Beryl Double Strand Necklace, Suzanne Belperron, containing round and oval polished aquamarine and green beryl beads measuring approximately 7.50-12.97 mm in diameter, strung knotted with a silver clasp containing a bezel set oval mixed cut green beryl measuring approximately 20.70 x 14.00 x 11.93 mm.Stamp: (Partially obscured maker's mark for Gron et Darde) (French assay mark).Accompanied by a Belperron certificate of authenticity, numbered B50208202015, stating that this bead necklace, number SVN28, is the work of Suzanne Belperron and was most likely created between 1932 and 1940 by the company B. Herz from a design by Suzanne Belperron.