Vintage Rare Lapis Silver Metal Necklace

I've had this awhile with the intention of cleaning it and, of course, wearing it. However, I haven't gotten around to it, so it's time for a new home! I found one other of these online, which surprised me! The pink photo is taken from that listing to better show the necklace length. That one is selling for $500!! This definitely has squash necklace vibes! Potentially handmade. It's definitely vintage and extremely extremely unique. No signature found and I am unsure of the metal type.