the central ornament of openwork design, featuring an oval-shaped alexandrite weighing approximately 1.40 carats, prong-set in horizontal fashion, accented by round facet-cut demantoid garnets, suspending two pendants terminating with a round facet-cut alexandrite and demantoid garnet, each weighing approximately 1.05 carats; length: 22 1/2in; with Russian assay marks.