A diamond serpent necklace, Paris, circa 1919. Photo courtesy Wartski London

 in the form of a snake, the platinum body finely set with old brilliant cut diamonds in a bombé scale pattern, its body entwined to form the neck.

Attributed to the Lavabre workshop. Lavabre supplied Cartier Paris with diamond set jewels and a necklace of identical design made by Lavabre for Cartier is held in the Cartier Collection.

See Cartier 1900-1939, Judy , British Museum Press, 1997, number 201.