A Victorian diamond and pearl necklace

A Victorian diamond and pearl necklace
The front section designed as a graduated fringe of old brilliant and rose-cut diamond links with brilliant-cut diamond and pearl spacers suspended from a diamond and rose-cut diamond graduated line to a rose-cut diamond and knife-edge bar link back chain and rose-cut diamond three stone clasp, circa 1890, cased, approximately 35.0 cm. long, please note that the pearls have not been tested for natural origin