An Antique Platinum and Diamond Sautoir Necklace, consisting of a converted navette shaped pendant/brooch with pierced open work and millegrain accents, containing one old mine cut diamond weighing approximately 0.49 carat, six old mine cut diamonds weighing approximately 1.38 carats total, numerous old European, old mine, rose cut and single cut diamonds weighing approximately 1.60 carats total, suspended from a navette shaped fancy link longchain necklace with hand engraved gallery and millegrain accents, containing 42 old European cut diamonds weighing approximately 2.50 carats total and 132 single cut diamonds weighing approximately 2.30 carats total, with later 14 karat white gold swivel clasp.Clasp stamp: 14K. 21.90 dwts.