Rare Vintage Art Deco Assorted Gemstone In Hammered Metal Necklace 18in +3in

Rare Vintage Art Deco Assorted Gemstone In Hammered Metal Necklace 18in +3in I found one like this through an image search that had sold awhile back, it was listed as silver, but I can find no hallmarks of any kind, so I am unsure about the metal content. But this piece is amazing and I wouldn’t mind at all if it doesn’t sell!