High quality jewelry wire can be made in a variety of hardness from dead soft to fully hardened. In the middle of this range is a wire hardness called half hard. This wire is stiffer and more springy than dead soft, but not as stiff and springy as fully hardened wire. In general, only gold, gold-filled, sterling silver, fine silver, copper or brass jewelry wire can be purchased with a hardness of half-hard. Frequently manufacture of half-hard jewelry wire requires and additional step in the manufacturing process and for this reason, half-hard jewelry wire is often more expensive than soft jewelry wire. Half hard jewelry wire is not recommended for making spirals and usually works better for making angular jewelry wire components and not as well for making rounded jewelry wire components like ear wires or hoops.
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