Antique gold, emerald and diamond necklace circa 1850. This necklace features One square step cut cushion cut emerald with an approximate weight of .65 carat; One step cut pear shaped emerald with an approximate weight of .40 carat; 5 cushion shaped old mine cut diamonds with an approximate weight of .70 carats. Choker length original chain is 14 inches with a more modern chain added to make it 19 inches long.