Vintage signed Sphinx citrine yellow / topaz orange glass riviere necklace, triangle shaped crystals set open-backed in silver tone settings Plastic and I have seen similar

and I have seen similar designs attributed to Max and Norbert Neiger

The necklace has a length of about 17 inches and fastens using a gold tone screw barrel clasp

There were many different designs all commissioned and overseen by Coro's renowned Head Designer Adolph Katz and much of the work was patented by him to prevent it from being copied

Stunning three strand mid-century Art Deco style necklace with bezel set smoky coloured aurora borealis crystals set in silver tone

so there is minor wear and aging with tiny flecks of verdigris on the inner surfaces

Vintage signed Sphinx citrine yellow / topaz orange glass riviere necklace, triangle shaped crystals set open-backed in silver tone settings Plastic and I have seen similarGorgeous vintage glass rhinestone riviere necklace claw set in silver tone with large open back citrine yellow orange faceted glass rhinestones emulating gemstones. A lovely example of this range of riviere necklaces, which the Sphinx company produced in many colours however these crystal shapes and the signed panels are harder to find. Sphinx were a highly respected UK brand who manufactured jewellery for Kenneth Jay Lane, Saks, Bloomingdales, Neiman