Heavy Blue Stone Dual Strand Beaded Sodalite? Signed Vintage Necklace Lapis Blue

This listing is a stone beaded, dual strand necklace, that I believe to be sodalite. I am unsure of the maker's mark. So if you know, please enlighten me. The clasp is where it is signed and in very good condition. All of the hardware is chrome, silver tone. The inner measurement is approximately 18" long. The clasp is marked, silver tone, measuring approximately 1 1/2" in diameter. (Please note, there is a small ding on the inside of the clasp). All of the hardware is tarnish free. The sodalite beads are approximately 12mm. Please note, there is good weight on this piece. I will include a generic dust bag for storage. Buy with confidence, careful packaging promised. I love to bundle. J Bin 5