Antique Shell Cameo Pendant on 12KT GF Chain

Beautiful estate filigree and rope halo Carnelian Shell Cameo Pendant on a yellow gold 16" serpentine chain. The inner cameo setting tests as 10kt gold filled and the cameo is genuine carved shell. The chain is just under 16" long, 2mm wide x 1mm thick, has a spring ring closure, and is stamped as "1/20 12KT GF". The chain is also from the 1970's. Total weight is 2.9g Contact me if you have any questions!