Four-strand cultured pearl and diamond necklace, Marianne Ostier, circa 1960

The four strands composed of 253 cultured pearls measuring approximately 10.0 to 6.8 mm., completed by a clasp of stepped form set with round and baguette diamonds weighing approximately 5.25 carats, mounted in platinum, lengths approximately 18 to 22 inches, maker's mark for Ostier. With original Ostier envelope.