This is an early Japan glass bead choker necklace. These unique beads are half red and half black with gold tone swirls. There are smaller red beads with raised gold swirls and even smaller spacer red beads. The extension consist of black beads. There is some verde gris on the extension chain and J hook. It is string strung and knotted between the beads. Size is 14 inches in length including the extension.