I recently had a gallery owner suggest that I make my key chain necklace with an oxidized key and shiny chain instead of shiny key and oxidized chain. I obliged, and am in love with the results! Not only did it look really cool on its own and make the diamond stand out, but it immediately made me think.....layering! How great do both look together? I would go for three together hanging at varying lengths-oxidized, shiny, oxidized. Perfection!