Vintage Sphinx amethyst purple glass riviere necklace, heavy, bezel set, open-backed stones in ornate gold tone settings Brothers that were originally part of

that were originally part of a set

as pictured

hallmarks or signatures so I have listed as gold tone

The final picture shows an antique advertising plate for these Bohemian garnet pieces

Vintage Sphinx amethyst purple glass riviere necklace, heavy, bezel set, open-backed stones in ornate gold tone settings Brothers that were originally part ofFabulous vintage amethyst purple crystal riviere necklace in a gorgeous deep purple. This is a style used by the Sphinx jewellery company in the UK, unsigned as usual but clearly a Sphinx piece. This necklace has the transparent coloured stones as opposed to the banded agate style of glass. These transparent ones catch the light beautifully and can be layered in the style of Anna Wintour. This is a heavy set piece with many large faceted glass stones,