Cast brass from a 3d print of a Pictish brooch fragment from Perth museum with a glass cabochons. A total fantasy piece but I dont think it would be too out of place in the correct setting. There is an existing trade weight from the viking period with a very similar brooch fragment.
Weight is made from a cast piece which has been stuck into a piece of pewter, patinated and polished. Please note these are props and accurate weights cannot be guaranteed, feel free to contact me if you'd like to know any more.