what are the different sizes of jewelry wire
For jewelry applications, gauges 12-28 are most common. The size of wire is defined by one of two measuring systems. The American wire gauge (AWG) and the Standard wire gauge (SWG) systems.
1 Use 30-gauge or 28-gauge (0.25 to 0.32 mm) wire for delicate jewelry making. 2  It is great for wire weaving, rings, bead work and making small chains. 3  Use fine jewelry making tools for this gauge. 4  Use 26-gauge (0.40 mm) to wrap beads and make smaller chain loops.
For making jump rings, use 10- to 18-gauge wire (2.5 to 1.3 mm). Bracelet and necklace wire components are generally made out of wire that is 16-, 18- or 20-gauge (1.3 to 0.8 mm). Earring wires are usually made out of 18- or 20-gauge wire (1.0 to 0.8 mm).