Its made using round wire that is then flattened and formed into a series of box-like shapes. Study now. I have been looking for something like this for ages! If it is real gold, you should be able to see a golden yellow stain. In North America, the standardized wire gauge system is the American Wire Gauge (or AWG, also known as the Brown & Sharpe wire gauge) and refers to both jewelry making wire and electrical wire for the diameters of solid non-ferrous wire and sheet metal thickness. 2 gauge = 1/4-inch or 6.5 millimeters. Just be prepared to rip it out and start over if it doesnt fit. But it should not vary more than that. The first thing I want you to know and commit to memory is that the smaller the gauge number, the thicker the wire. Most large online jewelry supply vendors should have this information available to you to help you choose your supplies more easily and make you feel comfortable that youre getting exactly what youre looking for. Each time jewelry wire is drawn through a draw plate, it increases the hardness of the wire. Good, strong gold but with more gold than 10K. Some older saws have a pitch chain.