River necklace in yellow gold 750 thousandths adorned with a succession of twenty-three falling oval-cut amethysts (minor restorations to some joints), ratchet clasp and safety chain. Paris 1819-1838 (ram's head). Dim. of amethysts: 11.6 x 9.3 x 4.8 to 20 x 16.8 x 9.4 mm Estimated total weight of amethysts: 180 ct Length: 40 cm - Width: 1.7 cm Gross weight: 47.8 g