Very unusual old necklace with cameo pendant. The cameo is not shell, it may be carnelian or similar stone, cold to the touch, mounted in its original silvertone mounting with openwork design and four brilliant marcasites as accents, very unusual. The lady in the cameo is also unique, with a Grecian style hairdo we think. The pendant is on a 16" chain also believed to be original, with a most beautiful and unusual mother of pearl clasp in the back. The cameo pendant measures 1" by 3/4", and both cameo and chain are in very good condition.