Look, all I'm saying is that ANY metal that has oxidized can be returned to base metal with a strong reducing agent, in other words an acid. If the metal is interwoven in another material, you would have to just get it on the metal. Lacking a clear picture (I tried googling it) that's all I can say.
Just the same, all I'm saying is get one, let it turn black, use your magic, and post pix. Please just take it from people who know and have tried it. It doesn't work the way you think it would. Just trust me on this, I have one.