How can you tell if a lamp is copper?

To tell if a lamp is copper, first place a magnet near it. Copper isn't magnetic, so any attraction will usually indicate your piece is made from another material. Another option is to strike the base gently with the handle of a butter knife. Copper will usually produce a ringing sound, while other metals are more likely to make a duller thudding noise when struck. If you're still not sure about your lamp's materials, consult a certified appraiser or other knowledgeable expert. On 1stDibs, find a large selection of copper lamps.