Vintage Artisan sterling jasper modern necklace

Incredible estimated c. mid-century 1950s Brutalist-Modernist handmade artisan pendant. This heavy necklace features a large custom machine brushed matte finish jasper. The finish on the jasper gives it almost a poured concrete appearance. Very cool. Charcoal grays, browns & sunrise gold. I think of the mountains everytime I look at it. The abstract sterling setting screams Modernist era. A lot of work went into creating this unique & special price. Chain marked, pendant tested. Nice piece!