For sale is this circa 1920's Sterling Silver, Marcasites & Shell Cameo Necklace. The pendant measures almost 1 1/4" long x 5/8" wide and hangs from a sterling silver 14 1/2" long chain. Because the chain is so short, I'm including a sterling silver 2 1/2" long extension chain. The piece weighs 5.3 grams and has no damage or repairs.