Gold and Diamond Cascade Necklace

[M. Gérard ] Composed of 4 rows of round brilliant cut diamonds, gathered at the centre by a foliate cluster of marquise and round brilliant cut diamonds into 4 graduating diamond cascade drops.Diamonds weighing a total of approximately 70.00 caratsSigned M.Gérard, with serial numbersMaker's mark for André Vassort18 karat yellow goldTotal weight 102.58 gramsInner circumference 14½ inchesAccompanied by one Sotheby's folio