This antique sterling silver set shell cameo necklet is from the Art Deco period. The length around the neck is 16 1/2 inched long. The cavalier drop is 1 3/4 inches long and it is 1 inch wide. The filagree is beautiful and set with 4 relatively large marcasites as is the top of the pendant. the chain can be shortened about 1 1/2 inches at the jump ring set in the chain on the side opposite the working catch. The back is stamped Sterling and the necklace is in very good condition.