Katbran, I haven't seen anything like that...however, I would imagine that you could rhodium plate sterling or white gold crimps for that look. I would think that would be fairly simple to do.
You are 100% right JP , it's not hard but I don't have the set up. I'll just keep looking...they are teeeeeeny tiny crimps that were shiny black..might have been less than 2 .. close to 1mm. They may turn up at a show..who knows.