This is a pretty, unusual vintage chrome and blue faceted glass modernist Jakob Bengel necklace. The necklace would be from the Art Deco era and made in Germany. It is quite a small, delicate necklace, the largest bead is approx 12mm x 10mm and the smallest bead approx 6mm x 5mm. It is approx 415mm long including the ring catch. It is in very good vintage condition.