A LATE 19TH CENTURY DIAMOND AND SYNTHETIC SAPPHIRE NECKLACE

A LATE 19TH CENTURY DIAMOND AND SYNTHETIC SAPPHIRE NECKLACE
Composed of a central old-cut diamond stylised bow with later set colour change synthetic sapphire accent and drop, to a circular and rose-cut diamond openwork link necklace and diamond-set detachable articulated bar-link back section, with detachable fittings, circa 1890, French marks, 40.0cm, in fitted case