This lovely Art Deco sterling with black onyx cabachons necklace dates from the 1920's. The necklace is sterling silver set with marcasite and black onyx cabachon stones. The necklace is all original with no replaced or missing stones. The necklace chain is intricately made with tiny small flowers which decorate the chain . The flowers are repeated in larger pieces set with marcasite closer to the large main black onyx pendent. The pendent measures 1.5 inches ..The total measurement of the necklace 16.5 . Preowned