The majority of the jewelry wire sold under the Artistic Wire brand name is vinyl coated copper wire. This wire has a colored vinyl coating over a copper wire core. The vinyl coating can come in a wide variety of colors. The vinyl coating in concept is similar to the insulation on conventional electrical wire. This vinyl coated jewelry wire is manufactured in sizes from 10 gauge to 30 gauge, but our company only sells Artistic Wire in sizes from 10 gauge to 28 gauge. Because the vinyl coating on the wire is soft and can be scraped off, we recommend this wire for making necklaces, for earring bodies, and for home applications. This vinyl coated copper wire is not suitable for making bracelets or rings. Vinyl Coated Artistic Wire will normally have a hardness of soft.