Vintage Art Deco clear and black crystal faceted glass bead necklace with rhinestone rondelle beads with ornate screw clasp eisenberg This is a cleverly constructed

This is a cleverly constructed piece in which two identical dress clips fit onto a brooch frame

It has a length of about 16 inches and fastens with a gold tone spring ring clasp

The necklace has a minimum length of about 17 inches and fastens with a sterling silver spring ring clasp and 2-inch length of extension chain

stamped with '1/20 12K on sterling' showing that the yellow gold (or perhaps 'green' gold as it is sometimes called) and rose gold on alternating links is 12 carat gold filled over sterling silver

Vintage Art Deco clear and black crystal faceted glass bead necklace with rhinestone rondelle beads with ornate screw clasp eisenberg This is a cleverly constructedVintage Art Deco ice clear and jet black faceted crystal bead necklace. This is a lovely piece with chunky glass beads separated by clear rhinestone rondelle beads and round haematite beads. The black and clear beads are unusual shapes and stack together to form round beads with clear and black stripes. Inside the screw clasp there is a 'patent' and 'DRGM' stamp. DRGM stands for Deutsche Reichs Gebrauchsmuster, roughly translating to German Imperial