An early 19th century chrysoprase and ruby necklace

An early 19th century chrysoprase and ruby necklace, c1810, the graduated oval-shaped chrysoprase set within bi-colour gold scrolling surround and closed-back mounts, each separated with a stylised foliate link set with three rubies in gold, 38cm long

For a similar example see Bury, S., Jewellery 1789-1910, The International Era, Vol. I, 1789-1861, p.105