Silesian iron wire-work predates it's better known successor, Berlin iron, by a decade or two. Made in Gleiwitz, Silesia (nowadays a part of both Poland and Germany), these wonderful iron pieces of jewelry are composed of very fine woven mesh manipulated into various shapes and forms. Often they're froofy bows, but sometimes you get an elegantly simple chain like this one. (Rarely.) Iron is prone to oxidization, and for this reason not many of these Silesian iron pieces have survived. (Don't get it wet, please!) C. 1800.