These necklaces are made using a variety of hardware. The turquoise one is made with metal washers, stacked buttons and painted metal scrapbook embellishments. The rectangular one has beads that are made from sliced pieces of pyrex pipettes from a medical lab. The three tier floral pendant is made from epoxy scrapbook stickers over metal washers. The coral color one is made from a C-clip that is some kind of auto part, semi-precious stones and buttons.