Finnish designer Jorma Laine was died in 2002. His pieces used bronze and sterling silver and are representative of the Scandinavian abstract work going on in the 60s and 70s. You can read more about him at this blog, which has great information and photos but hasn’t been updated in about four years.
This piece is available from Etsy seller 20th Obsession. They date it to the 1970s, which seems about right to me. It’s a sterling silver pendant (no chain with it) and sells for USD $275.