With a filigree back suggesting an Austro-Hungarian origin and a hairstyle of the Edwardian era, this cameo set probably dates from the1910s onward. Each cameo is applied to a glass background and are most likely celluloid porcelain or bakelite (not determined). With a thumb pull clasp and a drop of 7.5in plus screwback earrings to match, this vintage necklace set is adorable!