TWO Genuine Stone Beads Necklace Agate Green Zoizite ? Amethyst ? Gemstone

Two genuine stone necklaces. The green and white necklace is very heavy. Not sure what the green beads are. There is some color in some few of the green beads. Red-ish and rust colors. The white beads look like agate beads with some bands in them. the largest beads on that necklace measure approx. 3/4" across. Not sure if the green beads are? Perhaps green zoizite or jasper? It measures 24" long , has a barrel screw clasp and is in great shape.

The other necklace has amethyst? and rough cut green beads with green peridot spacers? It measures 18" long. One of the amethyst beads has a nip near the drill hole. Interesting decorative clasp ends. Otherwise these are lovely!