Jewelry wire is obviously wire used to make jewelry. Jewelry wire is solid wire as opposed to the stranded wire used in electrical cords. Jewelry wire can be made of brass, copper, gold, sterling silver, fine silver, gold-filled, silver-filled and/or gold and silver plated wire. It can also be made in a variety of hardness levels, generally dead soft or half-hardened are the most common. All the materials used in making jewelry wire are relatively soft and therefore jewelry wire is suceptable to marking when worked with jewelry tools used improperly.