Cameo necklace vtg choker Marie Antoinette style French? Periwinkle gold tone

The chain is choker length and you may want to change to a longer chain. Not sure if this is Lucite or other material. The picture reminds me of France or Marie Antoinette style. The back needs a light cleaning. The prongs appear to be a little bit loose , Price Lowered accordingly. but has a lot of periwinkle color charm.!