Vintage Artisan sterling silver necklace blue black gemstones jade agate chunky

Beautiful handmade artisan chunky necklace, this is natural gemstones, on my professional gemstone tester it tested for jadeite I'm not sure if that's true, you have to determine what the stones are when the meter reads the stones because not all gemstones are listed on the tester, I think this could be agate? and black spinel or jadeite for the black ones, I don't know alot about gemstones if you know please do let me know! This was from an estate find and was said to be vintage handmade and higher end better quality piece. it's made very well and has a sterling toggle clasp ends. it's a heavier piece the stones are rather chunky. measures approximately 22.5" long end to end. The blue stones are beautiful and swirly with blue, black and white. Excellent condition! Priced lower because I'm unsure of the gems. So I'm sure you are getting a great deal here! Box 6 no lowball offers priced very fairly . bundle to save! I sell in my closet and have tons of other brands similar to list such as Kirk's folly, Warner, hollycraft, Saint John, Ralph lauren, Swarovski, coro, dior, Donald stannard, lisner, renoir, Eisenberg, Christian dior,Givenchy, ciner, carolee's, hobe, Ben amun, Perez sanz, suarti, lois hill, Tiffany and co, juliana, hattie Carnegie, deliza and elster, miriam haskell, trifari, Vendome, Alexis bittar, Judith jack, kjl, vargas, Sherman, Nolan Miller, Elsa peretti sharra Pagano, Jill Fagin, Heidi daus, Jay feinberg, Germany, Japan, Hong Kong, Simon ju,