A late 19th century diamond necklace

A late 19th century diamond necklace
The detachable front designed as a rose-cut diamond fleur-de-lys shaped motif with brilliant-cut diamond centre and three stone cluster detail suspending a diamond drop and swag to matching diamond graduated scroll articulated shoulders suspended from a rose-cut diamond knife edge link back section, circa 1890, approximately 38.5 cm. long, in fitted case together with fittings for alternate wear